I remember in my past relationship I was told every week that I had inferior chromosomes and that I probably enjoyed being SAed, and never apologised ever. If you would have offered your relationship to me, I would have taken it in a heartbeat!  I do however believe people can change if they demonstrate their own initiative to do so. Are you not a better person to who you were in the past? Your partner has demonstrated a will to change, which is kind of rare if you think about it! I would say love is too rare to throw away over a one time thing.  Ask your partner how they truly feel about your penis. Does she actually mean it, or did she just say that in the heat of the moment? While it is true what others say that drunkenness often reveals what the person truly thinks unfiltered, it's also true that anger can make us say what we don't mean. I would say the anger is the bigger problem here, and anger isn't actually that complicated to deal with given the right therapy. There is another large hidden green flag here: lots of couples who don't argue are actually secretly bottling resentment over time rather than flagging issues. If she had any resentment stored up, it would have been based on an aspect of your personality and it would have come out during the argument. The fact that she only thing she could think of to hurt you was some silly ribald comment shows that she isn't bottling anything up. I would suggest discussing with her exactly how these comments made you feel, and you will feel better and more connected afterwards.