He did not “sleep over” as other gossip sites or paparazzi made up. He is not dating Demi as well, they are close friends.
SAT, 24 OCTOBER 2009 AT 12:13 AM
Joe Jonas pays a visit to BFF Demi Lovato at her home in Toluca Lake, Calif., on Friday morning (October 22).
After a limo came to pick Joe up, Demi and her stepdad drove to the Center Staging Studio in Burbank.
Rumors of the two dating have spread across the internet after they were spotted on a double date with Kevin Jonas and Danielle Deleasa in Toronto, Canada. Demi and Joe just recently wrapped filming on Camp Rock 2.
Source: Just Jared Jr.
Pictures have been added!