Rose

Nurse Rose: (Lauren Stamile) A nurse at the hospital.

Career
She works often with Dr. Derek Shepherd. She has been the attending nurse on over 30 of Dr. Derek Shepherd's surgeries, as Rose stated in "Forever Young" (Episode 8, Season 4).

Romantic life
Derek and Rose shared a kiss and were dating, much to Meredith's distress as she tried to get over him. Despite their seemingly happy relationship, Rose was soon bothered by comments made by hospital personnel about Meredith and Derek's breakup only being temporary. Rose felt she loved him but she was only ever McRebound

In the season finale, "Freedom," Derek and Meredith make up and share a kiss. Derek abruptly leaves this kiss to break up with Rose, signaling the end of their relationship.

Rose eventually gave up and left Seattle Grace to take up a job somewhere else.