"Molly–"
"It's okay, Sherlock. I know."
"I just–"
"It's okay, really."
A look of relief flooded his face. "Okay, well that's…good. I'll just–"
He made it halfway to the lab door before he suddenly stopped in his tracks and spun around on his heels. "Wait, how did you know before I even knew?"
"I know because as soon as you got off the plane John told me the first thing you said was that they were all going to Barts. I know because when you came flying in here that day you hugged me before you even realized what you were doing. I know because every time you've looked at me since I've seen it in your eyes." She paused. "I think it's not always about big romantic gestures or saying those three little words. Most of the time it's about looking at the other person and just knowing that what you're feeling is what they're feeling too."
"Oh."
He walked slowly towards the door as he pondered over her words before turning back once more. "How about dinner? Tonight?"
Her heart fluttered at the surprise offer. "Okay."
"Okay," he echoed softly, nervously jamming his hands in his pockets. "I'll see you tonight then."
She turned her focus back to the microscope while trying to hide a smile when, not a minute later, his head popped back in the door.
"Though for the record I do, in fact, love you."
Thanks to Lianne La Havas and her song What You Don't Do for the inspiration.