right to be upset?

Okay first off I trust my bf. I don't trust these crazy girls that his friends and him hang out with. This girl always posts pictures of her and guys at parties most of the pictures are of just her and MY BF. I told him how I felt before many times. So on his bf I just added the review to timeline. My issue with this whole thing is that my bf and I don't post much relationship stuff because it's no one business. But I don't like to scroll on Facebook and see a picture of my bf and another girl. If I didn't know any better I would assume they were dating. I don't like then that my family and his family who are friends with him see this. So my point is my bf clicked the review button and added the pictures of him and her. This is like the 4th time he's done this. And he knows why it bothers me. I'm upset because I don't understand why it's necessary for him to have pictures of him and this girl when he has a gf. He sees no problem and I'm just "crazy" 🙄