Roommate's friend

why dont you switch it up & not trade insults(or whatever it may be) with him. If he still acts mean, then he probably doesn't. If he acts nice, then he may feel the same. You could even ask your friend to do some low key inquiring to see how he feels.

you never went to primary school then. the meaner someone is to you, the more they like you. by this i mean trading stupid insults. not like being racist or beating the crap out of you.

i'd probably just have the room mate be like "dude, my room mate totally wants you. stop teasing her and go bang. when i'm not home that is".

Oh my god, I wish.
I just don't want to read his signals wrong.
Because then, instead of getting laid, I look like a fool haha.

eh, so it's awkward for a while if it goes bad. but from my experience dudes have no problem wanting to get laid.

Just ignore him...see what happens.