@Minoichakai You really can't. The only thing that I can say is that you're attracted to him and that is true. Movies may be affecting your feelings right now, but that doesn't invalidate the fact that you like him, because you wouldn't wanna be friends with him if you're not. Whether you want to be with him or not is all up to you. It's a decision. Will you risk your friendship by asking him out? Is your desire to make him as your boyfriend greater than just being friends with him? Will it be worth it?
I've once liked a friend a lot, and he also did the same to me, but we've realized that our friendship is more important to us than being boyfriend and girlfriend, and up until now, we're still friends.
