Audrina Patridge and her ex BMX biker Corey Bohan are officially back together! The two were at ‘The Hills’ series finale wrap party Saturday night at the Thompson Hotel in Beverly Hills.

“They are totally back together,” a source told us of Patridge, 25, and Bohan, 28. “They were so cute at the party. He had his arm around her and they both looked really happy.”

“They were sitting alone, whispering in each others’ ears and laughing a lot,” our source added.

Patridge’s rep also confirms the rekindling. “Audrina and Corey have been spending some time together,” the rep says. “They are taking it easy and enjoying each other’s company.”

Also making a public appearance as an official couple were Brody Jenner and Avril Lavigne. Kristin Cavallari arrived stag. How uncomfortable!

Source