<human>: Give me the gist of the text in a nutshell

I met this girl through work about 6 months ago and we have been offical for about 5 months. When we first started out she was incredibly sexy, thick, and tall. Now I've noticed over the past month that she has gained so much weight around her belly area that it literally has caused me not to be attracted to her physically. I would avoid going to the beach with her, pool, or any place people could see us in public without her shirt on.

Fast-forward to last night she said she loved me and I couldnt answer back. I dont love her at this point. 

She got upset and said what was wrong and tried to initiate sex with me but I declined and told her that her weight gain has become a huge turn-off to me. She started crying and called her roommates BF to come pick her up. Now I dont know what to do, I havent talked to her yet and not sure if we can move forward after my outright honesty of last night. Any body been in a similar cirumstances?
<bot>: GF of five months has gained alot of belly weight and I'm having a hard time being attracted to her. Told her, shit hit the fan.