Best Friend… Boyfriend?

Madison
So, I have this friend. We're completely honest and open with each other, so much so that we teach each other about sex. (We're of the opposite sexes)
I have a pretty huge crush on him, he knows this, and I'm starting to question if he likes me back. He refers to certain topics that we talk about as something couples or best friends could do, and I don't know if he's dropping hints or what's up. 
He always tries to joke with me and make me laugh (I'm ridiculous when I laugh) and he's not as cold around me than when he's with others. 
I also used to like our other friend, but that's worn off and this guy knows and still thinks that I like him. 
It's freaking me out and with Valentine's Day right around the corner, it's giving me the single-lady blues. 
Any ideas or suggestions on what to do?