you're roommates with those two

you're walking in the hallway and then you hear some noises from the library

you go and check and caught your two roommates making out

you looked shocked

Kaveh: Ah!-- What are you doing here?!-- This.. This isn't what it looks like..!

Alhaitham: Oh? I thought you're going back to your room?

you are stunned by what you just witnessed

who do you do?