She Loves Penetration But I Struggle With Control

My wife and I have been part of the chastity lifestyle for some time now… She remains fairly vanilla, while I’m much more kinky (which seems to be common among guys here:D). I wear my lock most of the day and night. During her period, it’s 24/7 with no release; usually, though, she unlocks me at night after sex two or three times a week. That said, my wife really enjoys PIV intercourse, and often during those moments, I lose control. She doesn’t mind if I cum, but afterward—especially when I get moody from the orgasm (which happens nearly once a week)—I feel guilty. Is there any way to help me resist or encourage her to administer punishment? Perhaps by eating my semen directly from her vagina or condom? I’ve mentioned this idea before, but she hasn’t been too keen on it.