<human>: Can you provide a brief rundown of the text in within 3 sentences?

My GF Faith and I have been together a while and it's been through tough spits and I understand we are still just kids, but we feel strongly for each other. 

She has a friend Katelyn who has always had a problem with me, even more when me and my gf got together. Two years later she can't get over herself and it drives my girlfriend crazy that we can't get along. 

After another argument with Katelyn I've decided that I don't want katelyn anywhere near me or my relationship with Faith. She is always trying to down talk me and try to tell faith to do what she think is right not what I think ory gf thinks.

Me and my girlfriend are arguing because she doesn't want to not it be friends with Katelyn but can't see what a leech on her and our relationship she is and in over two years she still can't get over herself after I've already tried take amends, but how can I get my gf to see that she doesnt need her?
<bot>: me and girfriend friend don't get along, she causes problems/ How can I makey gf see she doesnt need her?