Riven was slowly losing focus during the kiss. Mainly because he was getting closer and closer to his release.
Just a bit more... Hah...
But before he could get what he wanted, Soren interrupted him.
His hand firmly grabbed Riven's, his eyes were open, and his lips parted from Riven's. His expression seemed to say, 'How dare you think you can cum without my permission.'
Riven's cheeks were flushed, and his breathing was heavy. His ebony furrowed with frustration. He should have expected this. This was typical of Soren, to deny him a release, withhold it until he felt like he had had enough fun.
"You broke your rule... You touched me..." Riven managed to say in between breaths.
Soren acted like he did not hear Riven's taunt. He lifted Riven's hand closer to his face to take a good look. His fingers were wet, covered in pre-cum.
Riven stared down at the mess on his hand and wondered why Soren was staring at it so intently.