Wow. We're posting on Cuckolds.com, right? Will is dead on. Steve is living a cuckold's dream life: a hot, super-sexual wife, who is truly devoted to her marriage, who takes baby steps and communicates fully, who tries at every stage to please her husband and checks in with him constantly to make sure he's enjoying it, and who has (finally) gotten a fuller understanding that Steve wants in his heart to play a little rougher, psychologically speaking, and is working to figure out how to push more of Steve's buttons, a little harder, because it will make him and her happy.
What could POOSIBLY be better, for a cuckold?
It is interesting that she's told Frank all about it. But I don't think she brought him into that so she can pull away from Steve, I think she's discussing it so she can give Steve more of what he wants -- more play with denial, weekends away, and generally more cuckification of Steve -- in a way that Frank will NOT think it reflects any greater emotional attachment by her towards Frank or detachment from Steve. She's telling Frank so he can help her cuckold Steve better, and so he won't misunderstand her intentions. That's what I think, anyway. Perhaps without consciously knowing it, she's trying to make Frank act like more of a "bull." (Hate the term, but the behavioral meaning is sorta clear).
All I can say is again, WOW. Steve, you are one lucky cuckold. Enjoy!