It's clear that they aren't respecting him. I agree with many here who have said that if they were true friends, they wouldn't bully him. There's no point in wasting your life trying to get people to respect you that don't respect anybody. Those are not good quality friends. They can't even really be friends with each other, because they never know when one many turn. I recently watch the Netflix series 13 Reasons. You can see that people often spend time with people they don't actually like, just to "look cool" in front of other people. You can see the same thing in the 2017 movie Wonder.