<human>: Condense the text into a few key points

I met this guy back in 2013 and we dated for a short period of time and I haven't fully been able to get over for some reason (maybe because he disappeared on me and I never got closure). 

Truth be told, I believed he dumped me because he thought I was too "prissy" and he was looking for someone with looser morals. He went as far as sleeping with girls he met on sex websites and such. Needless to say, he was only looking for sex at the time.

He disappeared on me and it took me ages to get over him. To this day, I don't think I've fully gotten over him. I still fantasize about him every day.

Today, I came across a very very recent picture of him and oh boy. He gained tons of weight. For some reason, I first laughed and thought "Karma's a b*tch, isn't it?" (because he once told me he only dates skinny girls). Subsequently, I found him far more attractive then ever.

What on earth? He used to look like a Hollister model now he looks like a man with a bit of meat on. His features have softened. I'm into athletic guys in general so I don't understand how this chubbiness of his is turning me on?

Then again, he ditched me because he preferred to sleep around despite the fact that he thought I was " freaking damn hot". He's been single since he ditched me.

I know laughing was mean but he treated me quite poorly. I still have the hots for him though. Why is that?
<bot>: Ex-flame gained a lot of weight which I thought would help me get over him after all this time, but I'm even more attracted now.  I'm usually into athletic guys.