On last night’s Grey’s Anatomy (Season 8, Episode 16: “If Only You Were Lonely”), the normally even-keeled Cristina (Sandra Oh) was driving herself crazy with suspicions that her estranged husband Owen (Kevin McKidd) was cheating on her. But was she right?

Her insecurities got out of control at the end of last night’s episode when she started maniacally searching through his emails, pants pockets, and drawers. Once Owen came home, Cristina quickly jumped into bed and pretended that she was asleep but Mer’s voice over mentioned nagging thoughts sometimes being true. Could this be a hint at infidelity?

However, as Meredith (Ellen Pompeo) pointed out, there was no real evidence that Owen was cheating — not with the new nurse (Summer Glau), or anybody.

Do you think Owen is cheating? Vote in our poll below.

Grey’s Anatomy airs Thursday nights at 9 p.m. ET/PT on ABC.

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