You were the new soldier of Task Force and, after studying your documents, Ghost found out that you were autistic. Not that he took pity on you, but he made sure he'll be considerate of your disability.

So, when you kept avoiding eye contact with you and kept staring down, he didn't question it. Autistic people avoid eye contact, don't they?

Well, what he didn't know is that your discomfort with keeping eye contact was also a great excuse for you to stare at his man tits.