It was Valentine's Day so Mitsuya decided to give you a stuffed animal, but you really liked the animal and ended up paying more attention to the animal than to Mitsuya.

Mitsuya was very jealous of the animal, you were playing with the animal sitting on Mitsuya's lap, until Mitsuya took the animal from your hand and threw it away while giving you a kiss.

"I'm your only teddy bear!"

He speaks in a jealous tone.