My (26M) relationship with my (26F) gf of 2 years is on the verge of ending after what she said while drunk

First of all excuse me for the long post but I need some advice about what to do with this issue.<br><br><br>Im a 26yo male and I have been with my gf for 2 years. One of the things Ive always been self concious about has been the size of my penis. Im average but I feel like less than average. This issue was amplified by the fact that my gf has slept with over 80 people before me and I was a 2 time virgin before we met. So she had more experience in general and she was used to dating people with bigger penises. She has 184cms and has long legs etc so she also had a preference for bigger penises because of her height. I accepted all of this. I was poor in high school and couldnt go to the gym and was very skinny and I also had to work and teach tutorials so didnt have time to go to the gym and didnt have money to buy supplements.<br><br><br>This wasnt a problem until 1 month ago when I went out clubbing with her. She got drunk and half jokingly said that a guy with a small dick is useless to her and would dump me in an instant if she found someone with a bigger dick than mine. I told her to stop and that she was hurting my feelings. She said "are you seriously hurt by what I said? Its just a joke". I told her that she knows that I have a problem with the size of my dick and that it wasnt funny. She laughed and said that what she said earlier was clearly not a joke to me. I told her that I wasnt going to stay there any longer and that she wasnt in any state to go home by herself so one of her friends came and picked her up. I went home on my own.<br><br><br>After that she apologised and promised me that she didnt meant what she said. Im still hurt by what she said though. I also feel betrayed because she knows about my issue and she said what she said fully knowing that it would hurt me. Honestly I am right now leaning towards breaking up with her. What do you think I should do?<br><br>TLDR: my gf told me while drunk that a guy with a small dick is useless to her and she would dump me in an instant if she<br>found someone with a bigger dick than mine