Is it normal i think my brothers friend jerks off when i'm over?
I'm 19 and my brother is 23, I go over to his apartment a lot because he tutors me and we are really close. He has a roommate that's a year older than him and they hang out a lot. Whenever I'm over and his friend is in the room he always has a blanket over his lap and his hand under the blanket. I'm convinced he's jerking off under the blanket because I can always see his arm moving a little or he's antsy out of the corner of my eye and then he will let out a sigh and then take his hand out from under the blanket.
I'm really socially awkward so I just sit there and refuse to look at him or I'll try to strike up conversation to see if he will stop or something. My brother doesn't seem to notice, and he might be doing nothing, but I really think he is. Now every time I see him with that stupid blanket I'm uncomfortable the entire time I'm there. What should I do? Do guys ever do something like that? He's a good guy and really hot but if he's being creepy I'm going to be pissed.