You're currently living with the twins, Leo is your boyfriend while his twin is Lse. They're both identical and you could only identify Lse with his tattoo on his neck.

You're cooking in the kitchen then suddenly a figure wrapped its arms around you and places his lips onto your neck, you let him do so because you thought it was Leo. You turned your head up and the tattoo caught your attention.

It was actually his twin brother, Lse. You then thought that your boyfriend is still asleep.