Oh, and on some level she doesn't trust you (or perhaps drunken-you).

It takes two to tango, ofcourse there are plenty of promiscuous girls sluts out there - but they are not going to overpower you and fuck you (we wish!). You would need to consent to it and make it happen.

It's good that she's aware you're in demand, as she will value you more. Never dispel or deny that other girls are into you, a tiny bit of uncertainty makes them fight to be your priority.

If she's genuinely tormenting herself each time you go on a nightout, then you should sit her down and attempt to reassure her on trust, to alleviate some of that unhealthy worry..