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

We have known each other for a year and a half and used to talk everyday, from the moment we woke up, to when we went to sleep.

No things have changed. She is always complaining to me about her life.  About how everything goes wrong, but she only talks to me when things are going wrong.

I know some will call it the friendzone, but I don't see it as that.  She is my best friend and for the longest time we could talk about anything and everything.

Things were going great until she got a BF a few months ago.  Now all she does talk about him.  Seriously.  70% of our conversations are about him.  Not even good things most of the time.

She whines constantly about how she is unhappy with her home life.  About how she caught him cheating on her.  She found pics from other girls he had been talking to before they got together and she feels that keeping them on there is cheating.  I see it as a grey area.
<bot>: I guess what I am asking is how do I tell my friend that using me as her complaint wall exclusively is making me depressed?  How do I get her to understand that she is potentially killing a great friendship with her constant complaints?