I was in the bathroom and heard my bf talking to his friend on the games and I noticed his friend was inviting him out of town with his family. My bf hasn’t seen him in a long time probably a couple years but they still talk and play games together. But my bfs response was “yeah I’ll come as long as your sisters coming” And that really just weirded me out... he hasn’t hung with him I know he doesn’t talk to her or anything but it seemed like a joke to the past like he liked her or something which I don’t care but to make a joke like that on a trip didn’t sound so great. Do I just let it go and move past I feel like I’m being dramatic. I haven’t said anything to him cause he doesn’t know I heard it. Boys will be boys and as long as I lived I know they always causally make jokes like that, It’s not like he’s cheating or anything but it felt disrespectful to me and gross and after hearing that I’d feel weird having him go idk

Update: Alright if anyone was interested I talked to him about it and he said it was a joke they used to say as friends to get under his skin and he meant it harmlessly. Apparently all his friends used to joke about it with him when they were younger so he said it as a inside joke type thing. Still feels a bit disrespectful but nothing really I can be mad at. Thank you all for the advice!