Most Helpful Guy
That perception is a bad one. I have had many female friends married and unmarried. It's pretty simple and easy to do, just consider them like a sister. Many people think that love can only mean relationships, but that is just not so. You can love someone and only ever be their friend.
Ask him to consider if he's misplacing his feelings for you. Talk to him about why he feels the way he does. Best friends share things like that, if he can't be definitive, then he's mistaken. If he is definitive, maybe he can change your mind. Or maybe you just aren't meant to stay together.
He could be ready for you but you aren't ready for him, or you could have outgrown where he is and what he sees is only part of who you are.
pro/con you both know a lot about each other. The pro in that is it's not a booty call, he knows you pretty well, which is a great way to start a relationship. the con is that you have developed friendship habits. Relationships are so vastly different, but oddly along the same lines.
Pro, you could realize feelings for him you never knew you had because you restricted yourself to thinking about him as a friend.
con, once you start down the relationship path, it's impossible to really get back to a pure friendship.1THIS IS NOT RELEVANT ANYMORE