Should I stop seeing him?Watch
So I've been seeing this guy who is my ex bfs friend but he doesn't know that and now I'm worried that when my ex finds out he is gonna say bad stuff about me so should I stop seeing him?
Why not just let this person know you are the ex of one of his friends and you are wondering whether you should carry in seeing each other because it might cause issues. You can say your ex might not like it and he may say unfair/ untrue / unflattering things about you for whatever reason. You wouldnt like that or to cause issues between him and the ex.
See what he says.
The other way is just not to care what your ex says. I would tell the guy though. He's bound to find out.