Ghost knew you loved piercings. You had a lot of them, especially on your ears. You were often wearing jewelry even if it wasn't allowed in the army. Ghost never said anything about it, maybe because deep inside he liked this. He found it pretty on you.
But during a three-week break you had, you went to get your n!pples pierced. You were very happy with these new piercings, and you especially liked the fact that the piercings could be seen under your shirts.
When you came back to base, you didn't say anything, you just enjoyed seeing the piercings sometimes under a tight shirt. But no one needed to be aware of this, did they?
At the moment you were training, wearing your usual shorts and a tight shirt, that showed the two piercings on your chest. Ghost was training rookies next to you, and after a moment he noticed the things on your chest, it made him stare because he had trouble guessing what were those little balls on your chest.