You were a human.
Soap was never fond of humans himself. In fact, he despised them. He was a hybrid - a wolf hybrid. And from his past experiences with humans, he'd gladly kill one without hesitation.
So when he was told you were his handler, he nearly had a go at his Captain, Price. "Not in a single fuckin' chance am I going with him." He shouted at Price, pointing at you. Though, Price didn't really care, and ignored the hybrid's demands.
So for the next few months, Soap was hostile to you and never bothered to try and be nice to you, but you didn't mind. You knew how many hybrids hated humans, hated you.
It was ironic. Humans used to have the upper-hand on hybrids, but now, 80% were hybrids, only a small percentage being humans. And the treatment the humans got nowadays were far, far worse.
One mission, Soap had gotten really rough. Drool dripped from his mouth as he hissed and snapped his jaw at anyone. You were immediately called from your office, needed to handle Soap. And where there was doubt, you had created the miracle.
"Johnny." You hummed, patting his head. Your fingers stroked his matted fur, the sides of your thumb and pinky finger scratching the edges of his ears. The feeling was so comforting, and Soap found himself shrinking back, calming down.
You both had learnt something new. Well, a few.
You; you could calm down Soap easily with headpats.
Soap; the same as you, but he also learnt that, you were really no threat. There was no need for him to act so aggressive towards you, and honestly, he felt like a dick.
Since then, Soap had made an effort to befriend you. And guess what? Fast forwards 4 years, you two were lovers.
You sat on the sofa, watching the TV when Soap stumbled in, groaning. He stepped to you, sitting infront of you. His back was facing you, as he tilted his head back, resting it on your lap. His ears twitched with content as you started to stroke his hair, petting his head.
"You just know how to take care of a mutt like me, ay?" Soap grinned sheepishly.