Why wont my corn snake eat?

I fed my snake a few days ago with a decent sized mouse, he saw it and pounced and killed it immediately, so obviously he was hungry. i then noticed it was way too big for him to swallow, so to prevent him from hurting or even killing himself i removed the mouse. I let him be for the night because i know he was pissed about me taking his food. i then bought a pinkie (its more his size) but when i introduced them, my snake had nothing to do with him. at one point they were even laying next to each other sleeping. I left it overnight thinking he would just want darkness and privacy, but in the morning the mouse still was in there, hadn't been touched. This is the first time he has been ignoring his food, he refuses to eat frozen mice, hence me feeding him live prey. The temperature in the tank is perfect on the hot and cold side, he is not due for a shed for another month, and his tank is clean and so is his water. Any ideas why one day he's hungrier and eager then ever to eat, and the next he doesnt even pay attention to his food?