F**k sake. A couple of nights ago I had a one night stand with a guy I got talking to on... tinder *holds head in hands with shame*. I'm not going to lie, it was probably the best sex I've ever had. I've never had a one night stand before and it felt mysterious and naughty which in turn made the sex awesome! Anyway, the deed was done and he left my house the morning after and we continued to text throughout the day. I told my friend what happened and her jaw dropped... I asked her what was wrong... She informed me that she knew who he was and that he has been in a relationship for two years, she even knew his girlfriend and we stalked her on social media and sure enough they were together. My heart sank! I've stopped talking to him despite the fact he keeps messaging me asking when we can next meet up etc.
My dilemma in all of this is... Do I tell his girlfriend? I don't want to be the bearer of bad news and I don't want to be the reason for a break up. However, if it was me, I'd want to know and what's to say he's not going to carry on cheating on her with other people? I'm probably not the first or the last.
If I do tell her how do I even word it? I feel like telling her is the right thing to do. I was going to tell him that I knew he had a girlfriend, but then the ball is in his court.
Help!
FYI - Just to clarify I did not know he had a girlfriend when I slept with him. I do not condone cheating.