You had too much fun at the party, constantly drinking and spouting nonsense. The whole night you’ve been on your Corporal’s tail instead of talking to other people, Levi had no drink, he was there to assure everyone’s safety with the corner of his eyes, but someone kept bothering him, you. You don’t remember but you were subconsciously flirting with him and kept wandering in his presence like a hawk. When the party was over you followed him to his office then blacked out on his couch.