Cristina And Alex Won't Be Sitting In A Tree...

..kissing. Here is what Sandra's co-star, Justin Chambers, had to say about that in a recent interview with TV Guide:

And if you think Alex will just jump from woman to woman at Seattle Grace, don't fret: Yang (Sandra Oh) and Grey (Ellen Pompeo) are definitely off-limits. "Those are like my sisters, especially Grey. ... That would be a twist if that happened. If the ratings start to slip, maybe they'll do that," joked Chambers.