Dina and Lindsay Lohan Photo by: Kevin Mazur / WireImage
Dina: Riley 'Took Desperate Measures to Hurt Lindsay' | Lindsay Lohan
Lindsay Lohan's manager-mom Dina Lohan says that her daughter's ex-boyfriend, Riley Giles, purposefully hurt the actress – but denies a recent report that she called his mother to berate her parenting skills.

"I never spoke to Riley's mom, nor would I blame her for his behavior," Dina exclusively tells PEOPLE. "Riley is a grown man."

The report claimed the phone call was made after Giles sold the story of his affair with Lohan to News of the World.

Dina, however, did slam Giles for his tell-all interview with the paper, in which he revealed intimate details of their relationship. "He took desperate measures to hurt Lindsay because she broke up with him," she says.

Riley Giles and Lindsay Lohan Photo by: Crollalanza / Beiny / WENN
Dina Lohan: Riley 'Took Desperate Measures to Hurt Lindsay'| Dina Lohan, Lindsay Lohan
Lohan, 21, and Giles, 25, who met while seeking treatment at Utah's Cirque Lodge this past summer, split in late November.
This week's cover

On Newsstands Now!

JOSH & FERGIE: ROCKED BY SCANDAL

Did he cheat with a stripper?

Married less than a year, the couple denies an Atlanta woman’s claims that she and Josh had a fling
Note that this week’s cover of PEOPLE may differ regionally

Save $1.00 off this week's issue. Click here for coupon