Similar events happend with me around the same age, my dad kept making fun of me for always dating "fat women" (even though he was fat himself). When he went to prison for 2 years i was able to finally work through my mental health and emotions and got back with my ex, who i had left for the same reasons as you, and now we have been together for over 6 years and we just got married last weekend. When you find someone you truly love and enjoy being with, don't let others tell you how to feel.