Three years in their relationship and John had never seen Sherlock with a baby. Or a child of any age for that matter.
So when Molly asked them to her daughter’s first birthday party he was curious as hell.
The afternoon progressed much as you can imagine. Though to be fair Sherlock was very accommodating. He complimented Molly on her daughter’s beauty (after John kicked his shin - repeatedly) and refrained from offending the other guests.
He held the baby for a few minutes (of course he knew that John wanted to see him holding a child, he just didn’t understand why), until she began to cry. And then to spit on his silk shirt.
He handed her back and walked over to John.
“You don’t want children.’
“No, I don’t.”
“Then why was it important for you to see me with a baby?”
“I don’t know. I just wanted to see.”
“To be sure?”
“Sure of what?”
“That I cannot handle children and therefore you won’t have any if you stay with me.”
“If? No, Sherlock, that’s not what this was about. It's really not. I just wanted to see.”
“Good. Because this day just reassured me in staying childless and unmarried.”
John thought about the ring he bought and grinned to himself.
‘We will see about you staying a bachelor.’