It seems that cock is the new cocaine for recovering train wreck Demi Lovato, 18. Demi was dating has been Wilmer Valderrama before and after heading to rehab, and now the 18 year-old is slurping up Amanda Seyfried‘s 36 year-old leftovers!

E! news reports that Ryan and Demi have been quietly dating “over the last couple of months”! Woah. They began seeing each other casually, but “it quickly heated up.”

“It was really hot and heavy for a while,” says a source close to the casual couple.

Demi and Ryan are slowing things down because she’s promoting her new single “Skyscraper.”

Hopefully Demi has someone else lined up that she can jump on when this fizzles, cause it’s pretty obvious she’s replacing one addiction with another.

Photos: Wenn