Boyfriend told me he masturbates to his female best friend...
Am I wrong to be upset about this?
I honestly don't think I would be as upset if we were physically together, but we are long-distance and will be for the next three years of college, which makes me already feel a bit insecure. This female best friend of his goes to the same college as him and even lives on the same floor as him.
We were talking and joking about how often we each masturbate, and he asked me if I ever masturbate to other guys and I said no, not really, and then I (without really thinking) asked him why, do you think about other girls? And he looked at me with this incredulous expression on his face like, "Well, obviously," and said yeah he usually masturbates to other girls, not me. I was a bit irked and jealous at this point, but I tried to laugh it off and said, "What, like porn stars?" which I wouldn't have minded at all really, but then he said no, mostly his female friends and stuff that he feels like he has an actual chance with. Without me even saying anything further he told me that most of the time he masturbates to his best female friend, that he's known since before we started dating, and who he still hangs out with every day.
She's really pretty and confident and I'm pretty insecure, so this makes me nervous. He hangs out with her a LOT and they even get drunk together. It scares me even more because we only get to see each other once every three months or so, and I know he gets pretty sexually frustrated.
Should I talk to him about this, or is this none of my business? It's not really something I should tell him not to do, and I feel kind of weird and helpless right now.