I doubt that Unit and Situation hooked up with each other, but we can dream lol. However, we do know that Sitch claims that Snooki gave him head while they were supposedly watching Unit bang Snooki's skanky BFF, Ryder, who nearly rode the entire male cast of Jersey Shore. So they probably have seen each other naked before since they fuck in front of each other and they party hard(considering Mike is in rehab and unit got arrested for public intoxication on the show) lowered inhibitions can lead to some down right gay things. Who knows?