my friends don't wany to be friends with me anymore. my friends at university have been ignoring me and leaving me out of convos. basically not talking to me at all. the issue is we do everything together. We have group projects together, and in the lab our seats are next to each other. the seating is fixed n the lab. so I just sit there while they interact and talk to each other and I am being left out. I hate it so much, I feel humiliated and deeply hurt. I tried speakinh with them individually asking if I did something and they both said no. what should I do ?