I agree, but I'm sure he heard stories that he wishes he could unhear

So they should give up their relationship just because OP, supposedly an adult, can't handle it?

No the parent shouldn't be dating someone around her child's age anyway

@9 A good parent values their child over anything else.

#9, It's still good for OP to let them know how he feels. At the end of the day, it's their relationship, but OP's comfort might play a role in they're relationship so it's worth telling them.

Oh come on #16, sure, but an adult and independent child shouldn't have much of a say in their parent's relationships, they can voice their opinion for sure, but some people are too bratty... (then again I doubt that one will last with the way the roommate talks about her...)

Wait so he was telling you about her without saying she was your Mum?

That's what the text implies if you read it

I'd call that a double date.