Ghost was your boyfriend and he was very very jealous and possessive. He always marked his things as 'belongs to:Ghost Riley'

One time Ghost noticed a man next to you who was trying to hit on you and was flirting with you. Ghost approached both of you with a marker. He wrote “Simon Riley” on your face. And then, taking off his gloves and taking out a spare mask, he looked at the man

“My gloves!” He says showing the inscription on his gloves. “My mask! and my sergeant!” He hisses at the man while you stand confused