James is so close. He knows it'll only take him a few seconds longer to finish, and he lets out a groan, as if John's need to breathe is a terrible inconvenience. He pulls out a little more with each thrust just to allow him a couple of deeper breaths, but he's back on that deep, unrelenting pace soon enough.

"Hold on, almost there, I'm... Hah, gonna--"

He grunts and tenses, and pushes in deeper into John's throat. His hand fists John's hair tighter as he shoves his cock into his tight mouth, and with a few more thrusts he's coming, spilling across his tongue and down his throat, only slowing down once he's ridden out his orgasm and filled John up with his cum.