One of the top posts on the CK2 subreddit right now:
"My homosexual daughter just gave birth to the Pope's son."
Apparently the story is this daughter was married off to some Holy Roman Empire prince, who was then raised as an Anti-Pope by the Emperor, his claim (being an Anti-Pope gives you a claim to be the real Pope) to the Papacy was pressed and successful, installing him as the real Pope, who obviously can't be married, so the daughter was sent back to her father's realm, but she was pregnant already when they separated.
Just a day in the life of a Crusader King.
I mean...women have had Pope children before. Who knows if they were lesbians or not. I don't think any Anti-Pope ever took over Rome though. I know the HRE had a few during its time, but I don't think they ever won their battles to install their man as the true Pope.
Sounds like my kind of game