<human>: Me and my girl friend have been dating for just over a year. Since summer things have not been going good. I'm at the point in the relationship where I know this isn't who I want to spend my life with.

We still get along but I know it's not what I want. It isn't fair for me to keep dating her too if I know I want out.

I've been in 2 long relationships before. one where she ended it and the other me. The best thing is normally to be honest and upfront IMO.

The problem is about 4 months into dating I learned she has depression. Normally she can overcome it but the last few months it does get her down in the dumps. I want to call the relationship off but I feel so guilty about doing it because I don't want her depression to get worse.

I'm not sure how to end it... I know I don't want to be in it anymore (not because of her depression either, it's personal issues and outlooks) I really need some advice.

Could you distill the essence of the text into 1-3 sentences?
<bot>: I want to break up with my gf of a year. She does suffer from depression and I don't know the best way to break up.