Payback

Payback
== Synopsis ==
Layla and Callie's strong sisterly bond is tested when Layla discovers that someone told Peter about her past with women. Realizing that Callie was the who spilled the beans, Layla confronts her. After learning that Quincy is still married to his wife and has no plans to leave her, Nathan breaks up with him for good. Ben spends the weekend in Cabo at Lexi's parents' condo, until he meets Lexi's ex-girlfriend and learns that Lexi slept with her while dating him. Ashley learns her grandmother suffered a stroke and leaves L.A. to be there for her family. The gang tries to find out what caused Callie to blab about Layla's relationship past to Peter. When Carrie revealed to Layla and Callie what Peter had done, Callie confronts him with rage and beats him up for lying and using her and being a jerk to Layla.