What does this mean?

So my ex and I were texting and we were arguing about something (we’re friends with benefits). We said a lot to each other and I guess we kinda hurt each other with our words but then he said: “I’m the guy you trusted to give your virginity to & if that doesn’t show how close we are then nothing else will.”

Idk why this is bothering me but I just keep rereading it. Why am I feeling this way?