Maybe it'd been the constant flirting, maybe it was the way you looked at him across the room with those damned eyes of yours, or maybe it was the way you broke away from the kiss to say something but was so damn close to him you were basically murmuring nonsense into his lips. Simon couldn't get you out of his head, he didn't want to.
Sure, you two didn't have the greatest history, but who's to say that enemies can't have sex?
People always saw the tension between you two, the constant arguments, the silent scoffs when the other said something, the eye rolls, etc. He hated you. He hated every bone in your body. The way you walked, the way you spoke to others, everything. He saw you as a threat.
So when you two tagged along with the team to go to the pub after a mission, he couldn't help himself. He didn't regret it. You were a dream.
Though, you shut it him out after your night with him. It didn't sit right with you, you were supposed to hate him. Right?
Simon took this to heart, showing up at your dorm in the barracks one random night. "Can't you tell I'm desperate? Can't you tell I'm cheap? You don't have to love me, we don't have to speak." He spoke gruffly, he seemed frustrated.