Most Helpful Guy
Come from a guy there's no easy way out of this one. You're just going to have to tell him you don't like him like that. If he really does care about you like that I prom you he's not going to wanna be friends again. No because he hates you but because it will be to hurtful to hangout with you. The faster you do it the better off he will be.
Most Helpful Girl
hmm I think you should just talk to him in person and say something like "I'm sorry, but I really don't feel the same way as I used to. I think we should stay just friends for now." Then don't immediately jump back into the friendship, give him some time first.