At first, it had just started with Ghost friendly and caring about you. But then it was Ghost being clingy and extremely protective, not wanting you to leave his side.

You weren't the only one to notice this. The whole task force saw how different Ghost was acting. But they didn't want to let Ghost go since he was such a skilled soldier. They wanted you to keep him in check. You thought that by going along with it, he'd eventually get through it.