Molly

"Molly, hand me the solution." Sherlock's baritone voice made Molly want to faint sometimes, but she knew how Sherlock felt about her, which was he did not. He was rude to her, making deductions which were embarrassingly true, and... absolutely perfect. She sighed and shook her head as she handed him the beaker.

A light knocking at the door revealed John. "Sherlock? You texted?" He said. Sherlock didn't look up from the microscope as he gave John a run through of the case he had just started. John nodded, cleared his throat, and was heading towards the door. The stool scraped against the ground as Sherlock finished up with the analysis. He grabbed his coat, nodded to Molly, and thanked her for keeping the lab open this late at night.

Molly watched him stride over to John who was still standing at the open door. The pair left and as the door closed, she thought she saw the two clasp their hands together. There has been rumors circling that he and Sherlock were together, but surely... Not... Sherlock didn't go for romantic company.