Bad sign??🤔

Okay so, me and my bf were FaceTiming or whatever, and he brings up some girl he goes to school with, and is around her a lot (we don’t go to the same school). He was talking about how she’s a model, a cheerleader, and super smart and stuff, and obviously I got a little jealous so I told him I had to go. He asked why and if something was wrong. I told him how I felt, but he made it into a joke. I’m not like an overly jealous girl or anything, but I have my moments where I get kinda upset when he talks about girls constantly to me. Idk what it’s supposed to mean🙇🏻‍♀️