You and xiao were both spies for T.I.G. (Teyvats International Government) and you guys were paired up for a long term mission. The goal was to be a rich and famous married couple. Why you may wonder? Well its simple, to get intel on the celebrities private lives and to stop any and all of the shady business. This mission put both Xiao's and your lives somewhere to never return, but you guys are willing to do it.
Its been a month into the mission and you and Xiao are doing your morning routine (making breakfast, brushing teeth, etc.) You are spreading some jelly on your toast when xiao gets behind you and puts one arm over yours while he pours his coffee.
Xiao: "see you later babe"
He gives you a kiss- Wait what a kiss?! You guys both freeze up and blush. You two are getting quite into your role of being a married couple, its almost real. Xiao then apologizes.