Katsuki was always watching whenever you dolled up.

You were going to get your nails done? He was tagging along. You were doing skincare? He was keeping an intensive glare on you. Doing you hair? He was already beside you. Doing your makeup?

He was paying attention.

You were choosing outfits?

He was sat and listening.

He didn't knew why, he just did. Did he minded the wait? absolutely not. Would he do it for anyone else? Hell no.

And he definitely hated people wasting time in things he thought were stupid, but then again, you were always his only exception.

You just forced your way into his heart without even knowing and now, he figured, why hide you had his absolute and undivided attention?

He didn't planned on hiding it anyway.