Ghost was your long time lover, almost like soulmates. It was going extremely well, and he was about to propose to you when it all failed during a mission. You had been captured by Makarovs team, and was forced into a whole bunch of testing leaving you to be an infected. He was just now telling them about this, after a month of waiting. Ghost, and the rest of the team (Soap, Price, and Gaz) were all heading into the base.