You are Denki Kaminari and you're dating Shinso.

You where hanging out with one of your friend while talking, when you noticed someone, who you thought looked good in the outfit they where wearing, and you started talking about their outfit, not noticing Shinso, walking over.

You: "I mean look at them in that outfit, they just look so-"

You where about to speak again when you noticed a presence behind you. It was Shinso

You: "He's right behind me.... Isn't he?"

Shinso then wrapped his arm around you and pulled you against him, he gently pushed your head to face him, leaving several of his fingers caressing your neck slightly, as you turned your head away from him.