Before the Disney star entered a facility for “emotional and physical” issues, sources said Lovato, 18, introduced pals to the “That ’70s Show” star as her boyfriend. Valderrama, 30, first connected with Lovato when they filmed a public-service spot together in Chile for earthquake relief in March, around the time she announced her relationship with Jonas. “The two started seeing each other in May right after her breakup with Jonas,” a source on the tour said. “She would show us pictures of them together.” Another source said Valderrama has been a big part of Lovato’s life leading right up to her decision to seek treatment.

Now, I love me some Fez…but dude is known to hook-up with the young ones. He dated Lindsay Lohan when she was just 18..which means they were most likely doing it before she was legal. He also admitted to Howard Stern that he was with Mandy Moore back in the day.