New direction

dana, thank you for your support, okdeacon, I appreciate your perspective
To your point okdeacon, Amber and I never set out to find her a boyfriend, they just evolved that way, and I have to say that they work as a couple, busy, with other obligations, but a couple nontheless.
They are going out tomorrow to one of his events, so once again, she will be pregnant on his arm, which i find erotic as hell
As for the pregnancy, there is a very slight chance the baby is his, and if it turns out that way, we honestly are not totally sure. M has told Amber he loves being a dad and loved every stage, but does not miss diapers. If they stay together, my guess is he would be some sort of really close friend of the family or something.
Tomorrow's event is black tie, so I will try to update as my cuckold angst permits

Wingman,
So, to answer your questions, yes, we did play with being "separated." After I was back, we had talked a lot during that summer/fall. Amber had admitted that she liked being still married, but also having M date her, and that us being actually physically separated made her time with me special and her time with him feel special and kinky. Around this time her business was starting to get pretty busy. We had a LOT of talks about this: "do you like dating M with your ring or without your ring better?" or "did you like being a guest at 'our' party" or "does it bother you that I like that you're another man's girlfriend?" along with questions about polyfidelity and open marriage versus her being faithful to M etc. We had talked about it, I realized that the "separation" kink was real for me, scary, and felt like playing with fire, but also as a cuckold and a beta, it felt "right" for me to kind of promote them as the alpha couple. Around this time a house about a block from us came up for rent. It was cute, SMALL, like maybe 600 square feet, one bedroom, one living room, tiny kitchen. Classic, old So Cal beach house. The owner had died and her estate was renting it out while they figured out what to do with it. So, cuckold brain working, I had seen it one day when I was coming back from a ride and since I have time a lot during the day, I might have "just happened" to go over there and chat with the son of the owner. So, he was interested in the idea of renting for six months until he could put stuff in order, I told him, not sure, but my wife's business might want to rent it for an office etc. So, I floated the idea to Amber, what if you rented that place? It was literally close enough that she could brush her teeth at our house and walk there. First off, she thought I was kinky as fuck for suggesting we rent another place. And then she was intrigued. So, after a lot of talking, we decided that she would 'hire' me as her rental agent, and that I would rent the place for her company for six months.
At first I thought that she would move there and it would be her place, since her company rented it, but she admitted one of the things that she loved about our marriage was that she had a man at home who wanted to fuck her and she had the freedom to ignore his erection. And she told me she kind of liked the idea of "keeping" me, like me being hers. So we decided that we'd set up the living room as her office, and the bedroom for me, and that I'd continue to work from our house.
And so for six months I slept there probably five or six nights a week while Amber and I were "separated" again. When i was back at our house, I'd sleep with her in our bed though. Weekends she was with M were particularly intense because I'd be at the little house, and she was truly his. I would sometimes be over at our house during the day, sometimes we'd meet for lunch or we'd have things to do as a couple, but the role was basically best friends, and she had a boyfriend. I still remember (and jerk off to) the memory of one perfect So Cal summer afternoon with her saying "OK, I have to go get ready, M is picking me up in a little over an hour. I'll call you tomorrow, probably late morning" and her sending me 'home' like a best friend then me walking over to the rental knowing that she is getting ready for him, for her boyfriend. It was an incredible six months. It was insane, to be honest, but also erotic as fuck. At the end of the lease, we kind of realized it had run it's course. Amber and M kind of settled down a little, I moved back home and also that summer we were talking about starting our family, so there was that shift too. The little house is gone, sadly, the owner's son sold it and the new owners put up a decent new house, but Amber and I still smile when we walk past the lot.
And she kept her ring on the entire time

Wingman and Viking
I love hearing back from you guys, even though I love our marriage, having support here helps
Our "real" house (although we are trying to move, since it is tight with one little one and one on the way) is a three bedroom, three floor townhouse. The master suite is the third floor, so no, I never got to go over there and watch without her knowing. At the time we had the two places, I wasn't denied, but since we were separated...
M certainly dated my wife more than I did
When i lived in Chicago, there were a few things of M's hanging in our closet, when I came back, those had gone back to his place, but when we played with the separation part, his clothes reappeared, which was hot as hell
Amber clearly enjoyed being a girlfriend and i think i have mentioned, we have this thing where we talk as if i am her friend and her "husband" is a third person. During the work week when he'd sleep over they were both usually up and out by 6:00-6:30, and frankly, having my own place was kind of nice I could get up, make my own coffee, get a ride in if I wanted, and then amble over to my "office." Of course, I'd head upstairs to enjoy the view of the messed up bed, and Amber would sometimes leave a chore list too. Of course I would make the bed, fold her lingerie, line her heels up
Thursday mornings were his late day (started at 7:30 lol) and she took that as her administrative morning, so she would have the morning at the rental. I'd be there and he would drop her off "at work" and it was like I was her secretary or something. I would have coffee and a light breakfast for her. He would pull in the driveway of the little house and would walk her to the door. She of course, would ALWAYS dress up for office day, unless he was away lol.
And in one of those amazing cuckoldress twists that she loved, she had a framed picture of them at a black tie event on her desk.
The rental ended for a couple of reasons, one the owner wanted the six months, although toward the end he asked if we needed longer. And we decided to start trying for our first pregnancy. I told you about how she caught me jerking off and decided to cage me and use me as her "stud" which was hot. After she was pregnant, we were intimate again, and she was also dating M. Around 5 months she started denying me, mostly because some of the positions became a challenge for us, but she was intimate with M until almost 8.5 months.
After the baby was born, she was terrified that M would no longer be attracted to her (even though he has three kids of his own). As it turned out, he was and he had invited her as his date to a formal event three months after our daughter was born. That was really the first time she was interested in sex (we had a few things go on early, not to be too graphic, but she got a BAD mastitis and needed antibiotics, which also stopped her nursing) but anyhow, since her date with M was timed like that, we decided that he would be her first after the baby.
They had a wonderful evening together, and so they actually were exclusive to eachother until we started trying for our second.

Hey poppag,
Thank you for writing, is nice to know people care about our story. Our youngest is now almost 4 months old. Amber has decided at this point that she prefers being a mom. Between two kids and her job there has not really been enough time for her to date M at the same level as they had been. We had had some episodes with our oldest, the one that killed Amber was when she was told that "Daddy does my hair better" and she started to feel that she might be missing out as mom.
She and M talked, they are still close, and honestly, have been intimate, but they are not going to be the same couple they were before. It is kind of hard to believe that she has been his only GF since his divorce, nearly 7 years! They clearly love eachother, and she clearly loves his cock, but right now he isn't her focus. She told him that she expected him to date, and that since she couldn't be the girl he deserves, she TRULY wants to know if he meets someone special. I of course keep thinking she set a pretty high bar for any next girlfriend lol
We've talked it through. She definitely misses him, or well, parts of him lol, but the time commitment was just more than she could bear with two little kids. I have had to admit to her that I love her being around, but I also miss "sexy, slutty cuckoldress Amber."
We had a long talk one night after the girls were in bed, sitting outside starting (and finishing) a bottle of wine, pressed against eachother. She was curious about what I missed and I told her about the excitement of seeing her dressing up, of seeing how happy she was to see him, of things like him coming to the door and her coming down as his trophy wife.
She kissed my cheek and whispered "I still love him, you know."
That being said, they have a black tie event in two weeks and MiL is coming down to see her grandbabies. And, I am almost certain, to give Amber the feeling of freedom to spend the night with M.