<human>: Alright, so I have been my girlfriend and I have been dating for almost a year and half, and the first year or so was great. But in the last few months she has become increasingly depressed to the point where I worry. Not that she will cause harm to herself, it just still makes me nervous. I am generally an extremely happy person, and I just can't be around it anymore. I've been planning on breaking up with her for a couple months now, but she goes through phases where she isn't as sad and the relationship works a little better. But after being told by my parents and all my friends that she is trouble, I finally decided today is the day. I'm taking her home after school today, and I'm going to have to get it over with. I really care about her, it just isn't meant to be. I have just been having a lot of anxiety about it today and need some kind of reassurance. I know I'll be happier in the end, I just have this terrible feeling in my gut because I can't stand to see her cry or anything.

What makes this so difficult is that she is in a great mood today, and she thinks our fighting is totally normal and doesn't see anything coming. We fight a lot. And it isn't healthy, and my friends and family notice. But she is convinced (as of yesterday) that we are going to college together. I just need some kind of advice on how to handle this. And yes, it has to happen today. I pick her up in an hour.

Can you summarize the given text in a few sentences?
<bot>: Breaking up with depressed girlfriend in an hour, she has no idea, and doesn't think anything is wrong with our relationship