Just caught my dad sleeping with another woman. What do I do?

My mom works at night. I came back home at 12am and boom, I caught my dad with another woman. My mom and dad aren't on good terms, they don't even have sex from my understanding. They live together just to raise the kids. BTW, my Mom knows the woman, in fact, they're "good friends"... show more My mom works at night. I came back home at 12am and boom, I caught my dad with another woman. My mom and dad aren't on good terms, they don't even have sex from my understanding. They live together just to raise the kids.

BTW, my Mom knows the woman, in fact, they're "good friends" She's married. We're very good friends. Everyone in my family knows her family. I don't want to disclose a lot of info here, but I'm sure you get the whole thing.

Should I tell my mom Or just stay out their business to avoid adding damage to an already damaged relationship? I'm 20 btw.


Advice, advice!!
37 answers 37