Jonas Brothers The guys looked pretty cute as usual as they greeted fans last night outside David Letterman's studio in NYC.

But there's one Jonas Brother who'll be spending this Valentine's day solo. As Dave got Nick to admit on the show, he and his GF Selena Gomez have recently split up.

Curiously, Nick doesn't seem to be too broken up about the break up, telling Dave "he's doing OK."

Wonder who did the dumping, and who was the one who got dumped?!?