I think I'm losing my best friend we've been friends since preschool and I can't afford to lose him!

He is a boy
He is a athletic
And is very skinny

If he's skinny, lose him, you'll find a swole best friend.

Encourage him to put a little bit of weight on, If that's what's causing you to lose him. Tell him how you feel... Answer mine? (:
http://www.ehelp.com/questions/10472391/what-to-expect-meeting-guy-i-met-over-internet

ok boys now a days act like that I feel the same way I have a guy friend but he acts like he is embarresed to be around me talk to your friend in private not around his friends because he will act different tell him how you feel and if you are scared because he is really thin just tell him you are worried about him and let him know that you are not trying to hurt his feelings

First make sure you are actually losing him. If you are then maybe prank him or text him jokes. If that doesn't work then try to make yourself sound so miserable and maybe he will sympathise.