You and Ghost were having a heated argument, and he was having a nasty behaviour. He had been too busy with the TF 141 missions, and didn't have time for your relationship with him. He was the Lietnaunt after all, he had lots of work there.

You both were fighting, away from each other, that until Ghost grabbed a glass bottle and threw it at you -- he inmediately regret it. He didn't react instantly, just watching how the bottle broke to pieces as it hit the wall next to your face.