If just thinking about hooking up with someone else while in a relationship is akin to really cheating on them, then Robb must have been dealing with some serious guilt. Either that, or it was full-on anger at his girlfriend back home on this week's "
The Real World: St. Thomas" (Wed., 10 p.m. ET on MTV).Robb's been developing some feelings for his roommate Marie, and he's been struggling with whether to act on them or be faithful to his ...