It’s a friend one!
My closest friend (DF) for 15 years has a sister (I’ll call her Caroline for ease) who is 9 years younger than her and they’re usually quite close.
over the last few years DF and Caroline have had multiple fallings out, and whenever this happens DF will tell me all of the horrible things Caroline had said and done.
The most recent fall out was (again) down to Caroline’s doing, which was, in my opinion, awful. She spread viscous rumours about DF to their family, telling people that my friend had slept with the man that Caroline was dating. This is completely false, but led to DF being treated disgustingly by her family and called awful names. Caroline also told the man that my DF was head over heels in love with that DF was sleeping with 5+ men at the same time, and wasn’t really interested in him. Again, completely false, but resulted in the man taking a huge step back.
I know categorically that these rumours are made up - DF is my closest friend and we tell each other everything, and I’ve comforted her when she’s been crying due to Caroline’s behaviour.
Caroline has form for this, she will also say horrible things about her friends, the men that she’s dating, her family etc. She’s extremely two-faced behind peoples backs but is all ‘sweetness and light’ to their faces.
obviously all of this has made me feel a certain way towards Caroline - I do not take this kind of immature, awful behaviour lightly and am more than happy to draw boundaries with people.
DF on the other hand is very soft, and has forgiven Caroline. The issue is that now DF wants to plan activities with Caroline, and had invited me. I’ve said no, but not gone into the reasons why as I understand that it’s her sister and I don’t want to make DF feel uncomfortable.
I am frustrated though, as Caroline has been absolutely vile to my DF and I’m really annoyed that DF forgives her time and time again. Should I keep out of it and just continue to comfort DF when shit hits the fan yet again? Or should I tell her that I will not be spending any time with Caroline again as I think she’s a horrible, spiteful person?