@rcier1010 Firstly, I just wanted to commend you for being such a supportive and caring mom for your son’s sexuality. Many of us are not so lucky coming out to their parents. I am a recently out lesbian in my senior year of university, and I’ve discovered that most students at my school don’t care one way or another what your sexuality is, but at the same time seem quite supportive of LGBTQ rights. I’m in Canada, so not sure how different it is where you are. Does your son’s high school have a GSA that he can attend, or a support group in your area.
My school has a “Q Centre” - basically just a supportive space with resources, group meetings, a spot to do homework and meet other people. Perhaps UCB has something similar? Also, he might really enjoy taking a course in queer theory.
I have no experience with the roommate situation, but hope it works out well. Thinking good vibes for you both.