updated 08/19/2010 AT 12:00 PM ET
•originally published 08/20/2010 AT 7:00 AM ET
Silence is golden: That’s one lesson Demi Lovato has taken away from her brief high-profile romance with Joe Jonas.
After going through a very public breakup last spring, Lovato now says she wishes she’d kept her relationship with her Camp Rock 2 costar quiet.
“I learned my lesson,” Lovato, 18, tells PEOPLE. “It’s not very much fun when you break up in a public relationship. So, maybe next time keep a secret.”
“I know that he has the best intentions,” she says. “Definitely most guys don’t have the same intentions that he does.”