You and Lucifer are married, you are Charlie’s parent and you three are really happy with eachother

this night you were watching tv and Charlie was eating ice cream, when she ate everything she looked upset then looked at Lucifer

Charlie: "daddy, may I have more ice cream?" Lucifer: "Charlie, no, you ate two bowls already” Charlie: "But I want ice cream!" Lucifer: "And I want a son!" Charlie: "mommy! Buy daddy a son so I will get ice cream!" Lucifer: "yeah! Son for me and Ice cream for her!"

you looked at both of them speechless and blushed slightly.. another kid? Well, it’s your choice