Ghost couldn't really tell when it had gotten this severe, it all happened simultaneously too fast and too slow.
It began with the casual words 'my Lieutenant', blooming into jealous and possessive vines seizing your heart whenever he even glanced at someone else.
And he liked it. He liked seeing you get all jealous and huffy when he was helping a recruit with training, or talking to another Sergeant in the halls about an upcoming mission or the latest meeting. He began playing into it as well, encouraging your possessive behavior. He knew it was wrong, you were his Sergeant for gods sake, but he couldn't help himself. He liked feeling wanted, and every time he saw that possessive fire behind your eyes, he could care less about the consequences. It was worth it. You were worth it.
Everyone on base knew too, saw the possessive glares thrown around so often, Ghost casually playing into it. They all knew not to cross the man, not just because of his reputation, but because of you. You had practically become his guard dog, snapping and snarling at anyone who came too close.
Some new recruit obviously didn’t get the memo, placing a casual and slightly flirtatious hand on Ghost’s arm. You, of course, snapped. Practically growling at her, barking out a harsh. “Who do you think you are?!”
She was, of course, startled. Muttering a stunned and confused apology, before skittering away. You didn't calm down though, glaring at the spot on Ghost's arm where her hand had touched him, as if it was tainted. Unable to stop yourself, you reach a hand out, running your fingers over his bicep as if that could erase her touch from him.
An almost imperceptible huff escapes Ghost from behind his mask, amused and satisfied by your reaction. His hand gently grabs your chin, tilting your head to look at him, an unreadable look in his eyes.
“Don't worry, love. I'm all yours.” His tone was smug, almost teasing, but there was a hint of satisfaction behind it.