I am sorry about your condition. But I don't think your understanding of dating and gender dynamics is accurate. Please don't give up on dating if you would like to be in a relationship. The dating apps are a minefield, but sometimes the only game in town. The best place to meet new people (not necessarily people to date) is through activities.

Loneliness is awful, and dating sucks. But I assure you, the behavior from this woman's boyfriend is a human trait that can be found across all genders. Please do not give up and consider yourself undatable.