<human>: Give me the gist of the text in a nutshell

So my girlfriend (she 24, me 26, dating for 2 years, live together) will occasionally go to bars with her girlfriends (who are basically the girlfriends of all my guy friends), and being that she is blessed with good looks [8/10], as are the friends she goes with, she is likewise blessed with free drink offers. After a "don't be mad I get free drinks and you don't"-type comment prior to one of these outings, I had to analyze the situation more.

Commence impending argument.

I just had to ask her how she'd feel if, should I go out to bars with the guys, I bought drinks for women. I of course led into this with a "we both know this is never going to happen, but..." disclaimer. The suggestion of this bizarro-universe idea seemed to anger her. She refused (even still to this day) to acknowledge that they were the same situation. She didn't think I had the right to really have any feelings of jealousy that she readily admitted she would have if I were to buy other women drinks. All this, and I hadn't even the thought of asking her *how* she gets drinks so freely. So reddit, I ask:
<bot>: Should I be allowed to buy other women drinks, or can she alone exercise her ability as an attractive and unsupervised woman to get free drinks, or is there some middle ground of these two sides to this?