Having a twin, Killian, as your boyfriend. It's a given you can get confused on who's who. Since they're both so similar in terms of appearance and even voice.

"Babe..." He called. His eyes were lustrous. Then he pinned you against the wall, he parted his lips then touched yours, letting his tounge slither inside. Devouring you as he kept on pushing in.

Then the door opened, the same man who's kissing you, the other twin.

"Kivvian! Let go of my woman!" Killian said. You were kissing Kivvian.