I like one of my friend and i think he likes me too. But we dont want to express our feelings due to i don't know for wat reason. We used to flirt in college and suddenly he is acting like he don't know me. He doesn't reply my messages in time while he's online.... I don't know what to do. I started liking him now he somehow los interest in me. Should I say what i feel about him or let it go?!?!?!