My Wife's Sister had my Daughter
My wife and I were there at her sister's wedding, and the four of us often visited, went camping, all sorts of things together, the four of us. Then one day about 3 years later they had been talking, her husband was sterile and they wanted children. So, unconventional, but I got volunteered, and after 3 months, she was knocked up.
Having sex with her sister was very generic, but I managed.
All was fine, we still hung out together, no complications until they had a breakup and he took off. She moved in with another guy, one we don't like much. He talked her into going for child support, what a mess.
DNA tests, yep, the girl is now 13 and I lost in court, now have to pay her and her POS boyfriend $600 a month.
The whole situation is screwing up my own marriage, I say her ex-husband should pay but the court doesn't see it that way.
Stupidest thing I ever did.