A shot of the horde of walkers surrounding the place Lee is in. And then based on what you said, Lee says it. After that i have no idea :)
After Lee saves Clem you are about to get on the boat, but the horde of zombies come, and the only way to save Clem and the others, is sacrificing yourself. OR, risking it and getting on the boat in hopes Lee is immune.
Either way he dies. After two days on the boat Lee if sick beyond belief, and Clem shoots Lee.
SEASON 2 PREVIEW
It is 5 years later. Thats all I got.