They were both panting hard, like they were running a marathon, and Rick couldn't help but admire how adorable his grandson was on top of him.
Morty was flushed, sweating and swearing, and absolutely perfect. His lips were all over him, licking and kissing and biting every inch of Rick he could reach. He rode his grandpa like a champ, his entire body moving rhythmically. Rick was right on the edge, so close…
He thrusted roughly into Morty and elicited a choked sob from him, music to his ears. The young boy was jerking himself of frantically.
"R-Rick," he whined. His pace quickened and Rick moaned, relishing the feeling of being ridden hard and fast."I… I l-love you Rick!" Morty shouted as he came.
Oh god. He said it.
Rick moaned as he pumped his grandson full of cum. They'd both been tiptoeing around saying it to each other and the intensity of the moment sent him right over the edge.
Morty slumped down to snuggle, thoroughly sticky and satisfied. Rick kissed the side of his face, content.