I'm sorry.

The partner I had yesterday was wonderful. It actually felt like co-op. Today I had some random Canadian, who insisted on running to the other side of the screen to do crazy things, sometimes causing me to get stuck behind barriers and die because I couldn't move outside of the stupid green oval between us. Other times he'd light a huge pack of zombies on fire whilst I was in the middle of it, or blow me up with a rocket launcher.
Then he'd have the nerve to wiggle his stupid flashlight by the health pack, as if I couldn't already see the bright glowing, green light already.
After about the millionth time we both died, I had to save my sanity.