<human>: My girlfriend [17] and I [m17]have been going out for the past two years and our relationship is all I've ever wanted. We get along perfectly, have great chemistry, and love each other to death.

The only issue is that her poor self-esteem leads her to mistrust me and constantly make comments such as saying that I "Wanna get with other girls" although I always make a point that she's the only one I want and that I'd never cheat on her (I wouldn't.)

Something happened tonight that pushed her over the edge. We were out to dinner with a friend of mine and he commented that awhile back I told him that a few of her friends were attractive. This caused her to completely flip out, start crying, and I think lose a lot of trust in me.

I know she's a very smart and reasonable girl, but the fact that there are other girls in the world seems to be the one thing that she has trouble accepting.

So I ask you, how do I respond to my girlfriends self esteem issues and reaction to me saying some of her friends are good looking?

Can you summarize the given text in a few sentences?
<bot>: Friend mentioned that awhile back I told him some of my girlfriends friends are hot, she flipped out and lost trust in me. How do I deal with this?