I know it can be complicated depending on how long their relationship was and how close they were... My wife's relationship with her ex was "not great" but the sex was. A few months ago while we were doing it I got her to admit that her ex fucked her better than I do. We're relatively young but not new to cuckolding so naturally this had to come up eventually. Of course it turned me on immensely and with very little convincing on my part she put herself out there for him. They share custody of a kid so they already see each other regularly. She started flirting with him which he responded to but was a bit apprehensive. Within two weeks she got him to kiss her (he wanted to really badly but held back at first because he thinks she's cheating on me). Now for the last few months they are having "secret" sex, most often at my house when I am at work and kid's at school. So the first question is, would you want your wife to do this? For me it's crazy hot. One of the things that makes it so hot to me is that I know they already have a sort of connection (I know some of you prefer to avoid this emotional connection between wife and another man) and of course, as most cuckolds do, I fantasize about things going even further. So the second question is, would you let your wife DATE her ex? And by that I mean anything from going out once in a while to even calling it a relationship, ie her ex is no longer her "ex". I know when they broke up he wanted her back really bad and she had considered taking him back mostly because they had a baby (at least that's the reason she tells me). I told her my fantasy that she dates him and she likes it, and plans on asking him if he wants to go for drinks and see how it progresses from there. To be clear we have a GREAT marriage and also a baby of our own, plus this guy really doesn't have his ish together so inb4 comments that she'd leave me for him. She'll laugh her head off.