Try

Hours later Castle returned home. Johanna Martha went to bed for the night shortly after her grandmother came home to change for a date and left. Beckett was relaxing in the living room when Castle came in.

"Ready for a bit of fun, Mrs. Castle."

Beckett smiled.

"I could use a bit of fun after everything I've been through lately."

"Well let's not waste any more time then."

Slowly Castle and Beckett reenacted their first night together from a number of years ago as well as the night that they had conceived Johanna Martha.

Hours later the two of them were relaxing in bed together before they went for another round.

"So you liked it?"

"Yeah."

"Even the part where…"

"Especially that part. I loved that."

"Good. Me too."

"I still have no idea what I was missing." Castle playfully teased.

"Oh I know."

"Want to go for another round?"

"Of course. We are trying to make another baby here."

Beckett remembered her friend telling her years ago that Beckett loved Castle and all Beckett wanted to do was make little Castle babies.

"I do love you and making little Castle babies with you, isn't half bad."

Castle laughed as he recalled what his wife was referring too.

"We do make adorable kids."

After that Castle and Beckett had some more fun. Beckett fell asleep after their last tryst and Castle followed suit soon after. Now it was time to wait before they could find out if there would be another baby Castle in the works.