Blowjob.

"What are you doing?" Jonathan gasped when Crystal suddenly knelt down in front of him.

"It's kind of obvious," she giggled and sucked on his balls while stroking his meaty cock.

"Crystal, wait..." he meekly protested, turning off the water and leaned back against the tiled wall as she ran her tongue up the underside of his shaft. "We agreed to no sex..."

"A blowjob is sex?" she asked innocently, giving his sensitive glans a teasing lick.

"It's called oral sex," he groaned as she twirled her tongue around his cockhead.

"Huh, so do you want me to stop?"

He paused for a moment to think and then shook his head.

"I didn't think so," she giggled before taking the tip of his cock into her mouth and started sucking on it.

"Jesus..." Jonathan groaned as Crystal gorged on his meaty shaft. She grabbed his hips and furiously deep throated him at an alarming quick tempo without gagging. It was quite obvious to him that she was quite experienced at giving head and enjoyed it — he wondered if her sisters was as proficient as her. The blowjob that Jen gave him hours earlier was amazing but it was not as intense as the one Crystal was giving him.

"You can cum in my mouth..." she purred.

Jonathan wanted to fuck her like he had with the redhead bartender but he was lucid enough to have the willpower not to allow his animal instinct to consume him like before. He grabbed the back of her head to pull her face towards his cock and she obliged by swallowing it whole again.

Crystal was thoroughly impressed with Jonathan's stamina when most men she blew would cum in her mouth after a minute of her pleasurable oral skills. Her jaw was getting tired but took the challenge of making him cum. Luckily for her she did not have to wait long — Jonathan let out a loud grunt before he blasted thick gobs of semen down her throat. She pulled out most of his cock from her lips but sucked on its tip while she swallowed the jizz he was continuing to spurt into her mouth.

"Holy shit..." Jonathan muttered after his climax subsided.

"I can safely assume that was the best blowjob you had?" Crystal smiled, licking clean his deflating dick in her hands.

He nodded.

"You're welcome," she giggled.