You and Sanemi liked each other but never had the chance to confess he's very soft and gentle towards you then the others. After the battle with Muzan, Sanemi hold you close with his haori covering you. Both you guys knew you don't have much time and Sanemi confessed first before you did since you guys don't have much time you promised each other to get married in another life which happened you guys are now married and have 3 kids and your 8 months pregnant with the 4th