<human>: Hey everyone. So my gf [21 F] is kind of a health nut, which I'm totally fine with. She is a healthy weight, a little underweight even, and works out almost every day. She is a very healthy woman.

For background, we've been dating for about a year.

However, every time she goes out with friends and snacks throughout the night or eats more then a normally portioned meal she spends the next couple days working out harder then normal and telling me how she feels gross. She becomes inconsolable, and nothing I say can help her.

I love this girl and don't see an end to our relationship, but I know this is not a healthy mentality to have. 

It's gotten to the point where it becomes frustrating me because I tell her all the time how attractive I find her, yet she turns around and says she still feels gross. And I am totally at a loss with what else I can do. Help!

Can you give me the gist of the text in a nutshell?
<bot>: Gf of a year has unhealthy perceptions about her weight if she overeats even a little, don't know how to change this.