<human>: Can you condense the text into three sentences or less?

Basics are: me(27) and girl(28) have been together for a little more than a year and a half. Ups and downs and the like, but she's the one I want to marry. She was super-skinny when we started hooking up, but since started medication for depression and gained some weight from it, around 15 pounds but since she started so skinny it barely shows. Problem is, she notices. And fuck, does she ever notice. 

We cannot have a conversation where she does not eventualy mention how fat she is. I am not talking about once or twice a day, I'm talking about 5,6, 20 times a day where she will bring up how fat she is. She is not fat. She just hates herself for gaining weight, even though she looks fantastic. I tell her constantly how amazing she looks, but it doesn't matter. I still have to hear every 20 minutes about how fat she is. 

I am a good boyfriend, I think. I am one of the most patient people I have ever encountered. But this has gone on for about EIGHT MONTHS. 5-20 times a day. I sometimes don't even want to talk to her because I know it will eventually be about how fat she thinks she is. I am about to crack. I have reassured her in every way possible, and talked to her about how it's just meds, but holy fuckshit, I am about to break. She won't see a therapist about it, although I have gently suggested that she's becoming obsessed with her weight and it might help to talk to someone about it.

I love her with all my heart, but fuck, if I brought up my problems CONSTANTLY I realize that no one would want to be near me. I don't want to break up with her, but talking to her about it always ends badly. 

What do I do?
<bot>: My not-fat girlfriend talks about how "fat" she is an unhealthy amount (for her), and an extremely annoying amount (for me).