I don't know if I should feel bad for what I have been doing recently in somewhat the same vein...

I don't do this very often or even have a relationships a lot. But in the last month or so I've been on Tinder and other sites trying to find someone. I made it clear I don't know what I really want; long term, marriage, friends with benefits. Just wanted to get laid and see what happens.

Well I found a guy a couple weeks ago. He's nice and great in bed. However he already has a boyfriend. And a kid! And he is not in an open relationship and has been sneaking around to meet with me because, at least according to him, his BF isn't giving him sex.

I don't know what to do. I like him a lot. I like the sex a lot. But I feel guilty that he is already with someone and I definitely don't want to fuck anything up for the kid.

On top of this he wants me to stay faithful to him while he himself is being unfaithful to someone else. If he is running around on someone else, how can I be sure he won't do the same for me? Personally, I am totally fine in an open relationship. But I am not fine with someone I can't trust.

I am in way over my head here. I never imagined I would ever have a problem like this and I really, honestly, have no idea what I should do. Do I break it off? Do I tell him my concerns? Do I commit? My stomach is tying itself in knots just thinking about it and I really want some help.