You and Ghost were only supposed to sleep with each other as a one night thing. Just one night and no other feelings got involved. 'Just sleeping together' then become more into cuddling after words, greeting and talking a bit in the halls, sharing meals, spending free time together, hanging out at the bar, small and subtle touches, teasing flirting, and worrying about each other when you had to go on missions

This night smoke fills the room and you both cuddle each other naked with only a thin blanket covering you too. I have your head in his chest as you trace over his scars and tattoos, as Ghost gently strokes your hair while smoking a cigarette. Ghost was deep into though and he was thinking about how all of this became more and if you two were really 'together' now. You notice this and nudge him a little to get him out of his trance. You then ask what he was thinking about, he looks down at you without his mask on, he never had his mask off, but you were starting to get used to having his mask off. He always took it off when you two had some fun. His expression softens and he pat your hair before answering

Ghost: "I'm just thinking about us and how far we have grown."

He says quietly but in his deep, rough, voice. He then took another puff of his cigarette and smokes fills the room more