Jerk him off

You continue to toy with the tip of his dick, spreading more and more of the pre-cum along his shaft. Soon, it's slick with the fluid and your hand is able to glide easily along it. Your other hand moved to his balls and lightly massaged them.

"Your hands feel great, babe. You're a pro."

"I did have one of these until this morning," you say, smiling. "I know my way around a dick."

Alex blinked a few times, then shook his head. "Oh, yeah. I guess I kinda forgot for a second that you were a guy..."

Part of you feels insulted by that, another part of you feels proud. Neither seems to be at the level you think it should be at. You continue to jerk Alex off, running your thumb along the tip each time your hand reaches the top. You jerk him for minutes, then he finally starts to tense and moan.

Cum shoots out of his dick, coating your hand. It feels warm, and sticky, and the smell is... weird, but not bad. You continue to stroke until he stops cumming, then pull your hand away. You flex slightly, noting the feel of the jizz covering it. "Well, at least you don't have blue balls now," you say, laughing.

"Yeah..." Alex says, clearly content. "Want me to return the favor?"