Damn that's harsh. It really tears me up to read about young people having to deal with this. I want to be normal again too but at least I had twenty good years. All I can use as a comparison is my buddy who got shot in the head at 19 and put in a wheelchair. We rallied around him (his mom came to us and explained how important it was) and made sure we included him in things we did. It was a pita at times (for us and him as well) but worth it in the long run. 25 years later he's still one of my good buddies.

Consider talking to his friends, he won't like it but maybe this is a time when being sneaky is in order, they'll respond with more compassion than you'd think young guys in their twenties could have. Good luck to the both of you.