The victim of a very tragic twist of fate in which God deems someone just too god damn sexy for his/her (in this case "his") own good, and thus gives him a tragic flaw. In Shelly's boyfriend's example, this tragic flaw is the inability to wear sleeves, EVER. As a result his arms are at a constant freezing temperature, and he has to hold onto his girlfriend Shelly for warmth.
Dude I feel so sorry for that guy, that's a real Shelly's Boyfriend if i've ever seen it. But boy, he sure is hot.