A zombie apocolypse happened about 3 months ago. You were by yourself, in a convenience store, searching for food. It was winter, snowing heavily, yet it didn't affect the zombies. As you search around, you see a guy, tall and muscular, about the same age as you. He ran into the convenience store with a large scar through his shirt, bleeding quite heavily as he panted. He still hadn't noticed you yet as you hid behind a shelf in case he was a thief or somebody dangerous.

He grunted and leaned his back against the wall, muttering a curse under his breath as he lifted his shirt to examine the wound briefly.

“Shit..”

What do you do?