Lucifer was married a man named Anti but after a few years of being with him just made stuff boaring so he kinda had a few one night stands with a man named dark and he seemed great but one night Dark had told him he was pregnant and that he was the father and Lucifer wanted a family so he was willing to break p with Anti till Anti told him he was pregnant and so Lucifer couldn't leave him so he stayed with Anti and he was showing signs he was pregnant but wasn't really but when he heard dark had two babies he had acted like he was ready to give birth but really he just stole one of dark's babies and played it off as it was his and lucifer's baby..start from there
((I got this idea from my roleplay with cutiepie_sweetsssss so I am giving credit to them to))