That's why the fml said: "....caught him with another girl!" As in, he's cheating. Duh!

I could be wrong, but I think OP referring to the other girl, as in the mother is supportive of the girl her (ex?) boyfriend is cheating on her with, not the son himself.

That's not true. I've dated assholes and abusive partners, and their mothers loved me so much, they warned me to break up with their sons because they knew how horrible they were.

A mother who knows their child is doing wrong does not always support them. If anything it is sometimes an attempt to get the child back on the correct path.

Well, given that the mother kind of DID take OP's side, your question is a bit redundant. And no parent worth a shit will let their kid get away with being a morally bankrupt asshole. That's why it's called "parenting."

No. They were FUCKING. That's the whole point of the fml. For fuck's sake. How dumb can you people be?

I meant the word that not hst. My phones been acting up. Ugh.