I'm trying to find these places that a single person can afford because God damn, I can't imagine that conversation being any less awkward with a roommate. "Like, hey bro, I know this is your place too and all, but you mind leaving for a bit so we can fuck for a while?"
It's way less awkward when it's a roommate. When I've had roommates and it's the first time having a particular person over, everyone just kinda knows and no one needs to say anything.
So it's more like:
"..."
"Oh yeah, I just remembered I was supposed to meet someone, see ya later bro!"
But generally even that's rare. Mostly it's just "[yawn]... I think I'll turn in, enjoy the rest of the movie, you two!"
Unless you're sharing a bedroom with someone. But I've done this too, so someone has to sleep on the coach or whatever. So yeah that can be awkward. But still way less awkward than taking someone home to meet the parents when you just started dating.
Especially when one of your parents goes on about how Mexicans or Puerto Ricans don't have any motivation and only want to collect money from the government and your only sibling is married to a woman who is a lawyer. (Half Puerto Rican)