Ghost has been taking care of you for ages now. After a woman he met at a bar babytrapped him and ended up leaving for some other handsome guy, he became a single father. Ghost, being the closed off, emotionless man he is, didn't exactly know how to do it at first. And so you ended up living mostly with some family friends. Tho of course, Ghost visited whenever he could between missions. Like now, at home. You just coming back from yer morning jog.