When He Gets w his Friends

When my boyfriend gets w his friend(s) and I'm with him, were usually in the car and them two are up in the front talking and I'm in the back, on my phone. That's besides the point. Usually when they're talking my boyfriend and his friends always somehow get into a convo about girls giving them head and it's really fucking disgusting for me to hear about it, it's like he forgets I'm in the back and they'll sit there and laugh about it. Like this one time he talked about how a girl was about to give him head in the EIGHTH GRADE but she got scared bc he made his dick move.. like yeah it's funny but when I'm in the back seat and you tell stories about all these girls giving you head??!! I don't give him head for the simple fact that so many girls have and he asks for it too much & I want to do it when I'm ready to do it. I might be over reacting but it literally grosses me tf out. Has anyone else ever been in a situation like this?