With Arizona off in Africa saving the tiny humans, Callie is left in singleland Seattle with a broken heart and ample free time. Naturally, that's where Mark Sloan comes in. Looks like Callie and Mark are about to head down memory lane with a good old roomie makeout session on Season 7, Episode 9 of Grey's. But the real question is: do we like her better with Mark or Arizona? It's so tough! You decide and vote below.