This questions long, but can someone please help? I'd really appreciate it.?

This guy obviously wants you. He wouldn't tell his friends if he wasn't thinking that. You will have to be careful here though because i his gf get wind of this i would suspect she will NOT be happy. I suggest cornering him and confronting him. Either he picks his gf and stops messing with you or dumps his gf and goes out with you. Good Luck x