Grey's Anatomy star Ellen Pompeo has revealed details of Meredith's romance in the alternate world episode.
The instalment, airing tonight on ABC, imagines what would happen if Meredith's mother Ellis (Kate Burton) had never passed away.
Pompeo has now told TV Guide that Meredith is in a romance with Alex (Justin Chambers) in the parallel universe.
"They're like the perfect, preppy, yuppie couple," Pompeo explained. "She's also still always trying to please her mother and she's vying for her approval all the time."
However, Pompeo admitted that she was nervous about kissing Chambers for the episode, saying: "You have to understand, Justin is like my brother. I was so not into kissing him. I love him, and I think he's one of the hottest guys on the planet for the record, but yeah, it's like kissing your brother."
Pompeo also confirmed that Derek (Patrick Dempsey), who is married to Meredith in the normal world, will still be unhappily wed to Addison (Kate Walsh).
"We call him McDreary," she joked. "He's a grumpy guy in the hospital, nobody likes him and nobody talks to him."
Grey's Anatomy's executive producer Shonda Rhimes has previously described the alternate Meredith as "bright" and "shiny" but confirmed that the real world Meredith will have no idea about the parallel universe.
Grey's Anatomy airs on Thursdays at 9/8c on ABC.
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Watch the first ten minutes of the alternate universe episode of Grey's Anatomy, 'If/Then', below: