Finally I have my own idea again.

Coach:

That thought is what keeps him moving. If he can get you out of these zombie overrun places then the chances are reduced 70 percent. Then can finally both enjoy a normal life without constant worries of dead.

Rochelle:

It clenches her chest so painfully tight, has her shaking her head, and whispering 'no' because she won't allow that. You'll both make it out of here. When you ask her what's wrong she simply smiles and says nothing.

Ellis:

He tries to ignore it, tells himself mentally to shut up, and if that doesn't work gives it a smack and out loud says 'shut it!'. He doesn't want to think that he can lose you, or how all his friends and family is most likely gone already. He doesn't need those thoughts!

Nick:

One side tells him "people die" but the other argues back that doesn't mean he has to like or accept it. After that he's overprotective for a bit, always tugging you behind him and scolding you with even the slightest off move.