School Scandal
In high school, my gym teacher was married to the biology teacher, who was also really good friends with my math teacher. They were always chatting and walking from class to class together.
Well, one day, the biology teacher revealed a surprising update—she got pregnant and when she brought the baby in, there was an unignorable resemblance to the math teacher. Her husband ended up leaving the school permanently. It was a big scandal at our relatively small private school. One of a few, actually. Story credit: Reddit / Golden_death