Benji Madden can’t stop thinking about Paris Hilton, but after two months of trying to set him up with a number of available Hollywood beauties, Benji’s twin brother, Joel, and unofficial sister-in-law, Nicole Richie, are tired of watching the Good Charlotte rocker sulk over his ex.

Benji is so convinced that Paris is the right woman for him, he has bombarded her with a mirage of text messages and non-stop phone calls in hopes of getting back into the the partying hotel heiress’ good graces, celebrity moles reveal in this week’s edition of The National Enquirer.

He’s even tried sending her flowers.

Aww! Really sweet, right? Umm…not so much, at least not in Paris’ book. The star of MTV’s Paris Hilton’s My New BFF isn’t interested in rekindling her love affair with the edgiest of the Madden twins and has threatened to change her phone number if Benji doesn’t take the hint and hit the bricks.

“Benji thought Paris would come running back to him, but he was wrong,” an Enquirer source chuckles. “Now that Benji realizes Paris has gone with her life, he’s consumed by heartache.”

P.H. isn’t the only person itching for Benji to go on with his life.

“Nicole has all kinds of female friends-from models to actresses-who would love to date Benji. But every time Nicole told Benji that she and Joel would double with him and his fix-up, he flaked out at the last minute and spent the evening whimpering about Paris,” the insider says.

His persistent whining about lost love forced Nicole and Joel to sit Benji down recently for a chat that they hope will prompt the musician to move past Paris.

“Joel and Nicole finally had to sit Benji down and show him some tough love by telling him they don’t want to hear it anymore.”