I think he likes me but he has a girlfriend?

[expiredbraincells]

He pays a lot of attention to me, opens up to me a lot and flirts a lot. I really like him as a friend and don't want to lose that

[MoniqueTLC]

Be wary of this, he may be looking for validation/attention from you without wanting to leave his girlfriend.
Keep it platonic, and try not to engage in the flirting, he should start to get the picture

[baserunner611]

Sometimes a guy refuses friendship because you in love 💕 the girl, it hurts too much to be with her just a friend, no thank you

[baserunner611]

If he had a girlfriend, he would be a player. sorry

[Straight2thepoint]

Then don't lead him on.

[driven159]

so, stay friends don't push anything