Couple months ago I met a woman who works at a dispensary I visit about once a week. We hit it off really well. Despite trying to just keep it casual sex, and that only, I ended up developing some feelings for her. She confessed the same to me. I even introduced her to my teenaged daughter, for fucks sake.
I ran into her this evening at a gas station, with another guy, who turns out to be her husband. They’ve been married five years, and have two children together, ages 4 and 2. Finding out they have kids just made me feel disgusting.
So, I told him. He didnt believe me until I described a tattoo in a somewhat intimate place on her body. I had no fucking clue she was married. I think I ruined someone’s marriage. Or at least took part in ruining one.
I feel guilty. I am sorry for what I participated in. Am I a bad person?
You seem to have issues with the "ethical" part of non-monagamy. Cheating on your partner (aka, sleeping with other people without their consent), is not ethical. The ethical thing to do is to ask for that consent, and to break it off if you cant get it and you need to be with/sleep with other people.
Something tells me I shouldn't need to explain this