Digital cuckolding?

As Elsa stood up, all sweaty from their shared sex act, John said, "I'm glad you liked it," with a gleefull smile, but his cock and balls were aching for release still, from being so brutally teased by Elsa.

"I know baby," Elsa hummed out as she took a gulp from the water glass on the livingroom table before sitting herself down on the sofa next to John with her phone, scrolling on tiktok. John couldn't help his curiosity, so when he glanzed at Elsa's phone he noticed that almost every video contained either only muscular african guys with their shirts off, sometimes there was white or asian girls in the videos alongside the african men.

"What are you watching?" John asked, eyebrow raised and voice filled with dramatic suspicion. He tried to catch Elsa’s eye, but she stayed glued to her phone and kept scrolling.

"Nothing really, just what comes up you know," was Elsa's lacking respons to the question, *click click* could be heard from Elsa's fake long nails as she scrolled through the videos.

"I see," John answered back, his suspicion growing silently inside of him but he didn't dare to push the subject further, "But, could you help me get off maybe?" he asked in a hushed tone, blushing slightly from having to almost beg his own girlfriend to finish him off. It was so humiliating

"uh, Fine I guess," her tone filled with annoyance, she grabbed his cock with her thumb and index finger and slowly started to jerk him off, her other hand still busy scrolling tiktok. John moaned as her fingers pinched into his small member. With closed eyes he heard Elsa's whisper, "so hot", her hand ramping up the pace, "come on now, I know the little champ wanna spurt it's load," She edged him on, now slightly pinching his cock with her fake sharp nails as she did so. John bit his own lip from both the pain and pleasure, "it hurts," he pathetically squelled out. "Why complain so much? I'm helping you get off," her hash response caused John too gulp and stay quiet, knowing better than to argue with his girlfriend.

"Damn," Elsa whispered, John feeling left out opened his eyes to glanze at her phone. In the video he could see a tall black man, with fully flexed abs with shorts so loose they left little to John's imagination, the guy's cock was huge. John's cock twitched at the sight and he let out an involuntary deep moan as he spurted his load onto his stomach.

"Uh, finally" Elsa said with nonchallance, she wiped her fingers off on John's arm, her eyes still glued to her phone.