My cousin (I'll call her Marilyn) has been in a relationship with a guy named Bob for 5 years. Bob is already accepted as a valuable family member of ours. We've been on holidays together many times and he is a genuine person.
Both are in their late 20s and were going to live together. They had bought a piece of ground and have hired architects for the foundations of their house.
3 weeks ago, it turned out that my cousin was cheating on Bob consistently.
For more than one year already, she had been sleeping with Bobs close friend Brian.
Brian is a married man and has 2 kids.
Our family could not believe it, but it's true. My cousin had not confessed, but it came to the surface via friends of Brian.
Bob was devastated and so were we. I thought my cousin was a genuine person and I could not believe she was capable of doing this.
We ran into Marilyn at a party and she acted as if nothing had happened. No regrets or sorrow, she was joking and laughing and having beers with girl friends.
My sister couldn't understand either. Had nightmares about it. She went to my cousin for an explanation and Marilyn said " I just did not have the balls to tell Bob that I was no longer in love "
Regardless of this, she was still planning to build a house with Bob until all this came to the surface.
When it did, she suddenly chose for Brian. But Brian said he could not continue with this and dumped my cousin Marilyn.
My sister seems to be oke with this explanation but I am not. I was having a beer with my friends yesterday and ran into Bob in the bar. I said to him that I could not understand how my cousin was capable of this, and that I regret it and find Bob a great guy. Bob said that she had looked him in the eye many times the last months, and told him she loved him.
I am completely done with my cousin. I find her a liar, a manipulator and a cheap slut.
Am I overreacting? I can understand that her attraction towards Bob has faded away, but I can not accept that she has been doing this for one year. And that she was able to sleep with Bob during all this cheating without being devastated about it and telling him about the cheating. She has no moral sense in my opinion and I am completely done with her
Next week we were planning to go on a family weekend and it would be the first time for me to hang out with Marilyn since we found out. I am planning not to go because I am furious about Marilyn and it would ruin the whole weekend.
My parents and sister say I am overreacting and I should keep out of this.
Thoughts?