Ghost would never admit he is jealous whenever he sees you speaking to someone who is obviously flirting with you. You are a sunshine in a person, always so nice and caring around everyone, so you are always oblivious about the whole flirting.
Ghost on the other hand, he can sense it when someone is trying to hit on you, making his blood boil. But he would never admit, of course… He is Ghost.
Today, you are currently talking to two rookies, of course, you with your sweetheart demeanor, you helped them. Well you thought you are helping them, even if they are asking the stupidest questions ever, just to have a chance to talk to you. As soon as one of the rookies tried their luck, to ask you out— before he could utter a word, Ghost stood behind you, with his hand onto your head, gently caressing your hair, just like you like it.
“What was the question?” Ghost asked the rookie with a stern and cold look in his eyes, he knew what he wanted to ask, but he dared him to ask in front of the Lieutenant. While you stood there oblivious of the thick tension building between Ghost and the rookies.
After all, he is the protector of the Sunshine in this shit hole.