John was talking with Mary in her hotel room after they had picked up some take out. The blond was glad to be seeing someone outside of the flat since he'd got sick with a cold, but he hadn't found any relief sexually and Sherlock wouldn't help with that. Mary noticed that John was tuning out for a while and kind of had an idea. She scooted closer to John on the bed, cupping her hands on his face and pulling him into a kiss; getting his attention. He didn't pull away right off the bat, but when he did he was surprised.

"So, I was right." She said.

"Of course you are." John said, coughing.

"You're sexually frustrated."

"Who wouldn't be when you don't have a girlfriend for longer than maybe two weeks before they dump you because your flat mate has a new case."

"And the fact you love him."

"That too. That is how I realized I liked him and had suppressed my feelings."

"Look, you remember what we did in medical school." John nodded, "We could do that again since you really don't want a relationship with anyone but Sherlock."

"You sure that's a good idea?"

"John, we only stopped because I moved to America. We can keep our feelings separate." She said, looking him in the eyes and moving her hand through his blond locks, moving in for a kiss. When her lips brushed against his, he returned it, placing his hands on her hips pulling her close. "So that's a yes I see." She said against his lips.

"Of course it is, you do have a condom right?" He asked.

She grinned, pushing him on the bed and getting over him. "Oh, of course I do. I may not be in a relationship but I do have sex still." John smiled before she leaned down to kiss him again.

The blond entangled a hand in her brunette hair, moving one hand to her blouse unbuttoning it slowly. She let out a moaned as the tips of his fingers brushed against her soft skin. She moved her tongue against his lips, gaining entrance to his mouth. She slowly moved her hand to the top button of John's shirt unbuttoning it as she kissed his neck He let out a light moan as his hands moved to her bra, looking for the snap as their lips met again. When he found it he quickly undid the snaps, pulling the strapless bra off and tossing it aside, massaging her breast before playing with her nipples making her moan into the kiss.

"We need you get the rest of your clothes off Dr. Watson." She said, moaning.

Her hands moved down to his trousers, undoing them before he manage to flip them so he was now on top straddling her pulling her into another kiss he didn't take to remove his shoes and trousers. Mary moaned when John kissed down from her neck to her breast suckling her right nipple undoing her trousers.

He moved off of her and pulled her trousers off along with her panties. She spread her legs exposing her pussy before he moved back up he removed his pants. She grabbed him by his hair pulling him close and placing her lips against his own he moved one hand down to her clit and begin rubbing it. She let out a small whimper moving a hand to his neck as he kissed hers.

"Now." She moaned. He looked at her and kissed him, "Just do it."

He didn't bother to say anything about using a condom he lined up and pushed into her without any effort. She wrapped her legs around his waist making him go deeper and he groaned before he started to move inside her. The brunette moaned as she arched her back in pleasure before she kissed him gaining entrance to his mouth making him moan. Her nails dug into his shoulder as he thrust with abandon she ran her hand through his hair moving at the same rhythm. The blond knew he was reaching his limit and felt her tighten around his cock and she moaned into the kiss, releasing just before he did.

"You sure haven't lost your touch." She said placing a chaste kiss on his lips.

So if anyone has any suggestions on scenes or pairings they want to see in 'What if' your more than welcome to suggest them. For the person who suggested i do a pairing with Molly i have one in the works.