Why not

"How do you say thank you?" you asked holding him to you.

He dropped to his knees and expertly undid your belt pulling down your pants and boxers so your cock sprung free.

"Holy fuck," he said looking at your cock before taking the head in his mouth and sucking on you.

Your mind raced as AJ worked you, you knew what your church preached and in this moment you were willing to endure fire and brimstone if it meant he didn't stop. You groaned as he took you out and sucked your balls into his mouth and tongued them.

"Am I doing a good job?" he asked looking up at you.

"Very good," you said pulling his mouth back to your cock.

He went back to work taking you almost completely into his mouth with little effort. AJ seemed so willing to please and you couldn't help but want to tease him a little.

"I've never been with a guy before," you said, "but you're making me feel really good."

He sucked feverishly trying to bring you off.

"It's so wrong," you said, "maybe I should stop."

His eyes went wide and he took you out of him mouth stroking you with both hands.

"Please don't," he pleaded.

You put your hand on the back of his head and pushed yourself back into his mouth, in reality you were very close and AJ was about to learn that. Working yourself in his mouth you brought yourself off, unloading into AJ's mouth which he kept tightly sealed to your cock. He slowly pulled you out and swallowed.

"I don't know where you're from," you said helping him to his feet, "but that was one hell of a thank you."

AJ was blushing, "we better get going," he said timidly.