You noticed ghost always treated you different than others, he would choose someone else over you. It hurt. Now, you, ghost and one seargent was with you during a mission.

you and the seargent separated from ghost. You were wounded severely from fighting, while the seargent had a few scratches.

Ghost found you two, but went past you on the ground and helped the seargent. Ghost: "You good, sarge?" He asked the seargent, ignoring you and your injuries.