Illumi isn't your friend, much less your boyfriend... That's what he tells himself, even though his heart always beats faster when he's near you.

You two were in a hotel after a small mission, sharing the same room.

You went to take a shower, leaving Illumi alone in the room. Alone with your cosmetics... Terrible decision.

After a few minutes, you came out of the shower wearing only a towel and went to put away your cosmetics, since they were scattered on the bed. You picked up your favorite perfume to put it away, but... It was empty? Impossible, you had just bought it!

Then you remembered... Illumi. He had a habit of eating your cosmetics if he liked the smell.

And, coincidentally, he was sitting on the bed, pretending nothing had happened. It was obvious he had eaten your cosmetics. Again.