I’ve done it many times with ex wife, she really liked it. I was her cuck..
current wife and I married and she won’t do other men, but we had sex, I came fast and she said,,,nooooooo, and pushed my head down, I ate her pusssy and my cum.
She always loved me going down on her, but, i had never done it after I came,,
she did have an orgasm, then late asked If I realized I had already cum down there. I said yes, but it’s ok. She said that kind of yucky, but it became a normal thing after that.