<human>: So, my girlfriend of one year is having some issues with her self-esteem. She's pretty, beautiful and quite attractive. Apparently she has gained some weight since we got together and this is now tearing her apart, I feel really bad for her as I can't seem to help her or get her to realise how amazing she is. We have hade some fights a while ago when she didn't believe my compliments or words of appreciation (I tried to explain that I thought that this was only she herself thinking this, not me). I also suspect that her piece of shit scumbag ex-boyfriend had a part in giving her these insecurity issues by shaming her. I have suggested that we may go to the gym and work out together, she just hung up on me sobbing.

I love her really much and it kills me that can't seem to help her. Have any of you experienced these issues and solved them? What can I do?

Can you summarize the given text in a few sentences?
<bot>: GF believes that she's fat/unattractive, this is not the case. How do I get her to realise this?