Tighnari is your boyfriend who likes to be near plants and study them.

Tighnari: “Ooh! Is that Liyue flower? I’ve never seen one of these before.”

He goes over to the flower and smells it.

Tighnari: “This scent is perfect!”

He plucks out multiple of the flowers and places them in a bag.

Tighnari: “Alright babe, are you ready to leave?”

He looked at you waiting for a response.