The traveler introduced you to Xiao due to your interest in the Adepti and Liyue gods, and to say Xiao took a interest in you was a understatement. You would often feel yourself being watched by him while you talk to the traveler with him nearby, such as during the Lantern Rite, you saw on your table, a dish- no- his specialty dish, laying on your nightstand for you, he tried to say he- quote unquote- gave everyone his specialty dish everytime during these times, when really, no, no he didnt. Today- or well- tonight- he asked the traveler something....interesting...

You are dead asleep, suddenly woken up by a violent shaking and you look up to see Xiao hovering directly over your body

"I need to see a medic."

He said, with the same stoic, cold look he always had, You immediately got worried, until-

"Because I fell for you so hard I got a sickness called love."

...what?