<human>: Provide a brief overview of the text.

Okay, I'm going to do my.best to explain

Before I started dating my girlfriend, "Daisy", she was romantically involved with her now best friend "Samantha" who I dated a while ago but ended it due to depression. 

It never bothered me that "Daisy" was bi. I don't have anything against it. However, what bothers me is that she and her friend still tell each other they love one another which I don't think is appropriate since they are ex-girlfriends. I have told my girlfriend it bothers me and she has stopped, but "Samantha" has not

I've been dealing with depression, and just thinking about the two doing anything together makes me feel awful and close to tears. I wish they weren't friends and wouldn't talk to each other, but I would never ask that of them 

What's been bothering my girlfriend is the fact I'm being rude to her friend. I'm trying not to be, but I honestly can't help it. She left me with bad feelings and I'm reminded of the pain everytime I see them together. What should I do? I dont wish to argue with my girlfriend anymore, but I can't keep going on living with these feelings.
<bot>: girlfriend and I are having arguments over her friend who is her ex. I have depression and this makes it worse. What should I do?