Exclusive: Grey's Triangle Not Over So Soon?

Rose is no shrinking violet when it comes to getting McDumped by McDreamy. Given the cozy, candle-burning climax of Grey's Anatomy's season finale, it's no big surprise that Lauren Stamile's run as Derek's squeeze may be nearing its end. But the typically oh-so-nice nurse won't be scrubbed out quietly.Sources tell me exclusively that when Rose is excised from the superstar surgeon's love life, though she plays it cool with Mer, she is far from Zen about the whole thing with the boyfriend. "I'd count on at least one emotional outburst," previews a setsider. "Rose is not her usual composed self with Derek." What's more, although as recently as this afternoon the talk was that Stamile would only appear in the two-hour season opener, there are now rumblings that Rose may remain a thorn in the supercouple's side just a tiny bit longer. What's your take? Would you have liked to see Meredith be given a more formidable rival? Or can no mere mortal stand in the way of the Mer-Der romance? ...