Joe Jonas Goes for the Older Chick

11/12/2008 4:09 AM PST

His brothers take super expensive cars for a spin. Middle Jonas does the same with the ladies.

Just minutes after dumping Taylor Swift, Joe (he's 19) is already onto another conquest –- Camilla Belle, 22, the young starlet from "10,000 BC." "They met on the set of his music video," a source tells People. "All the guys always had thought she was really pretty and that's why they asked her to be in it."

Taylor's going to have a whole album's worth of material now. We smell sibling rivalry.