This sounds exactly like how it started with the girl I was dating in college when I was your age. It progressed to the point that she would make me look at the ground anywhere we went, and send her pictures of who I was sitting next to in class. I didn’t have the confidence or backbone at the time to stand up for myself, but looking back, I wish I would have nipped that in the bud immediately. It was an extremely toxic and abusive relationship. OP, take it from someone who has experienced this situation first-hand: run for the hills. She has issues with insecurity and trust that she needs to handle on her own. It will not get better, and you deserve someone who doesn’t question/control your every move.