AU in which the Doctor stays with Rose and Tentoo, at least for a while
Rose stood just outside the doorway. Pete had to throw a party to celebrate his 'adoption' of the new Rose Tyler. Rose didn't want to go, of course. Quite frankly, all she wanted to do was curl up on a couch with the newly-renamed John Smith and watch telly. Instead, Rose was decked out in a floor-length silver dress, hair curled and makeup applied. On the other wide of the door was Pete, Jackie, and a very long list of important people Rose was expected to at least please if not impress.
"You look lovely." whispered a voice behind Rose as the owner pressed something soft into her palm. Rose smiled and turned, raising her hand to reveal a single red rose bloom in her palm. She grinned,
"John! Are you sure it's too late to back out?" she said.
"Yes, I think it is." he said. Rose stood up on her tiptoes and kissed him, gently taking his bottom lip in hers. She tugged and John groaned. His hands flew to her hair, sliding fingers through it and massaging her scalp when his fingers came back to her roots. Rose sighed in his ear and muttered,
"Of course, we could sneak away," her hands undid the fly on John's pants, "go to my bed," she slid down the zipper, brushing John's hard erection, "and think about how all of the people three floors below can hear us having boundary-breaking sex."
"Now Rose, tut tut tut, what would your mother say?" Rose smiled wider and turned to find the Doctor coming toward her. She smiled over her shoulder, keeping her hands in John's pants,
"I daresay her younger self would be cheering me on. How's the party?" she asked, ignoring John's moans and murmurs as she began stroking him up and down. The Doctor moved forward, hands in the pockets of his tuxedos. He clicked his tongue,
"It'd be a lot more fun with you there. Of course, I can see you are," he made a gesture at Rose's hands and John's crotch, "otherwise occupied." Rose looked down at her hands, as if for the first time realizing she was teasing the underside of John's erect cock. John's eyes were squeezed shut and his lips formed soundless words. Rose looked back at the Doctor,
"This? More of a hobby than anything. Looks like you could do with taking up a hobby yourself." said Rose, nodding at the Doctor's barely-concealed tented crotch. The Doctor shrugged and tried to hide the blush in his cheeks,
"No good at it myself. It's a sort of art, I find. If it's going to go anywhere, it needs a little…inspiration." He paused before the last word as Rose moved her hand just so and John's face signaled his ejaculation. Rose turned back to the Doctor, tongue barely touching her lips,
"Was that enough inspiration for you?"
"I'm afraid not. I think you might have to guide my hand." he said. Rose linked her elbow through his and the other through John's. She set off for the stairs, ignoring the sounds of the party just down the hall. The Doctor and John happily followed her up the stairs and to the dark room at the end of the hall, Rose's room.
Early the next morning, Rose lay curled beside John. Her brain registered a foreign chill to her back, somewhere it had recently been warm. She sleepily reached a hand behind her, feeling for the Doctor to bring him back to her. He wasn't there. Rose's hand hit something else with a crinkle. Her eyes shot open and she sat up straight in bed, pulling the paper back to her. In the Doctor's slightly loopy script was written
"And I suppose, if it's my last chance to say it…Rose Tyler,
I love you.
-Your Doctor"
When John awoke to Rose's sobs, he read the note and wrapped his arms around her. Rose cried herself to sleep.