My ldr gf wants to invite a guy to her apartment alone to watch a movie, am I right to be not okay with this?

Been dating a girl who lives 2500 miles away. She's super good looking and wonderful in every way. Somehow though, she thinks it's okay to invite an individual male to her home/dorm room to study or watch movies. It's not that I don't trust her to be tempted, but I feel it gives the wrong idea to the male involved. I am head over heels for her and if anyone sees those same qualities that I do, I feel they'll be inclined to make a move on her.

I'm super uncomfortable with the idea of it, but she seems to think it's alright and that those individuals will assume it's strictly platonic. I disagree, but I want opinions!