[Eventually, he does have to stop. He is still a being who needs air, and the outside is pretty cold, especially without the barrier keeping some of the cold off of them now. But they're in their own little world for a brief moment, and Sonic is already trying to think of some sort of witty one liner to seal this deal with. Neo's likely going to stab him, but it's gonna be so funny, and maybe it'll be worth it to see just how Neo's face looks after all of this.]
...2/3 actually