Ghost hated you.

The day you joined 141, it became obvious. It's your skill; you're a great sniper. You would tell yourself, brushing off the Luitenant's insults.

...

Both of you are on a mission, up on some high ground as sniper support to Price, Gaz and Soap.

Ghost has been... off. Gazing at you, mumbling under his breath nervously.

"Get up." He blurts out, fumbling with his voice and looking down at your position on the floor - face down, ass up, watching in your sniper scope.