"I've liked my friend for 6 years"

From what it sounds like to me you definitely have feelings for your "friend". I don't know if you've tried to tell him before or not but I think you should tell him. You obviously know him well enough to know you definitely like him if he's been your friend for that long, and that's also probably the reason why you sometimes deny that you actually do like him as more than friend, you probably don't want to ruin the friendship you two have. There is a chance you're risking that friendship but at the same time, you'll never know how you really feel about him if you don't take the chance and tell him you want to try being more than friends. It could end up being the best decision you've ever made. So I say go for it and tell him how you feel because from what I can tell, you definitely like this boy.

Good luck, I hope everything works out!