Boyfriend's Friend might like me?

How can you tell if a friend of your boyfriend likes you? Theres a guy, a friend of my bf( they play yugioh cards and stuff) and I think he might like me, I'm not sure though.





He smiles at me, plays around with me lol and high fives me...maybe he just friendly or something. At first he didnt do any of this, rarely talked to me(i knew he had a GF at this time) and then he started talking to me, high fiving me, and last night he walked up and like playfully punched me in the forehead...not hard or anything. Play like lol.





I heard some of the guys talking bout how they think he's bout to break up with his GF cuz he's getting distant with her, so he might already broken up with her or something.





Any way what are signs that a guy likes you? That way I'll know.Boyfriend's Friend might like me?
I wouldn't worry about it until he says something to you. Just keep acting the same way around him as always. He might just like the innocent flirting since he's having problems with his GF. Makes him feel good. Its okay until he says or does something.