A/N: Ok, so this is my first fan fiction in forever and my first Grey's fic. Reviews are greatly appreciated.
Prologue:
The sound of a cart rattling on the other side of the wall woke Izzie Stevens from the sleep of one who was mentally and physically exhausted. She immediately recalled why she was mentally exhausted; Christina and Burke's wedding that wasn't. So why was she physically exhausted? Her eyes shot open as she felt the reason for her physical exhaustion stir on the soft bed beside her.
She let out an almost inaudible gasp as she recognized the tousled brown hair streaked with grey and the sleek muscular back that emerged from the fine white cotton sheet that covered what she knew to be one hell of an ass.
She, Dr. Isobel Stevens, surgical resident at Seattle Grace Hospital, was in bed with Dr. Mark Sloan, world-renowned plastic surgeon and playboy extraordinaire. She wasn't just in bed with him; she had had sex with him. Crazy, drunken, fully satisfying sex. Multiple times.
What the hell was she thinking? First George, now McSteamy? George was married and Sloan was still hung up on Ms. Perfect Addison Forbes Montgomery. She really needed to change her choice in bed partners, preferably to men who weren't terminally ill or chronically in love with other people.
She didn't know what she was going to do about that, but she did know she had to get out of there. Gathering up her clothes, Izzie dressed and escaped before Sloan woke up.
One Week Later
"Sloan's gone!" Alex reported cheerfully has he entered the locker room. "Montgomery split and he hightailed it back to New York."
Izzie made some appropriate comment, then shut her locker and went to begin rounds. She didn't know why, but it felt like her heart was being cut into tiny little pieces. Mark hadn't been at the hospital since the Chief had chosen Derek over him and they had had sex. Really good sex. And she hadn't heard a word. She doubted he even remembered that they had had sex.
One Month Later
Izzie hadn't told anyone about her encounter with Mark. Meredith had been busy mothering Christina and trying to salvage her relationship with Derek. George was busy repeating his intern year and Alex was, well, Alex. Now, she was sitting in the bathroom she shared with Meredith, Alex, and Christina, staring at three different pregnancy tests. All of them read positive.
Meredith walked in then. She looked from the tests, to Izzie's big brown eyes that were clouded by tears.
"Who? When?" Meredith stammered.
"The night of the wedding. M-Mark," Izzie blubbered.
She, Dr. Isobel Stevens, former teen mother now Dr. Model, was having a baby. Mark Sloan's baby.