"Happy Birthday, Dipper and Mabel!" Everyone said as Mabel kissed her brother on the cheek as everyone cheered. It was another year for them. They were getting older, now in their early 20s. But they still loved each other dearly, even if Mabel did tend to wear Dipper's nerves to the point where they were thinner than a single strand of hair.
"Another year, Bro Bro. I love you." Mabel said as Dipper smiled at his sister. Despite her constantly getting on his nerves, he did indeed love her and was happy to see another year with her.
"I love you too, Mabel. Despite everything you and I go through, I'm glad to still have you here." He said as there was a knock on the door. Pacifica opened it...and smiled.
"Oh Mabel? Someone's here to see you." Pacifica called as Mabel gasped as Steven Universe arrived.
"Steven!!!!!! You came!!!! Ahhh!!" Mabel exclaimed as she rushed to him in a massive hug as Dipper smiled. He was happy to see his longtime friend.
"Hey Steven. Good to see you. Connie couldn't make it?" He asked as Steven shook his head.
"Nah. Her and I broke up. I'd...rather not go into it. Just know that we're done. That's all there is to it." The hybrid said as Pacifica chuckled.
"Psst! Mabel! Make your move on him! You heard him: Connie's out the picture! Now's your chance!" She whispered as Mabel chuckled.
"Hey Steven. Since you were late, you can make it up to me by spending some time with me." She said as Dipper chuckled. He knew his sister always had a thing for Steven.
"Meanwhile, while you two have fun, Dipper and I are going to have a little fun of our own. Come on, birthday boy ~" Pacifica said as Dipper fist bumped Steven and gave him a look that said: "All you, man." Clearly giving his approval before leaving with Pacifica.
"Well. Now that they're gone, how about you and me head upstairs?" Mabel said slyly as she led Steven upstairs to the bedroom. And the liquor must have kicked in quick because the two of them soon were making out.
"Steven.....I've always loved you. I've always wanted you....." Mabel said through gasps of breath as the two continued to make out until Mabel soon had Steven on his back, straddling him as she removed her shirt and bra, revealing her bouncing breasts as she then unzipped and pulled out Steven's cock before sucking him off, licking the shaft and tip as Steven moaned while holding her head in place as it bobbed up and down.
Steven could have responded to Mabel's confession of love. But decided that his actions would be better than his words as Mabel stopped sucking him off. Now it was the hybrid's turn to take control as he gently removed Mabel's panties before thrusting inside of her, causing the bed to shake with each thrust as Mabel screamed in pleasure.
"Best... birthday...ever!!!!" She screamed as Steven flipped her over and began drilling her in the ass, the sound of her cheeks clapping with each thrust.
"Fuck me, Steven! Fuck me!!" Mabel screamed as she and Steven soon reached their climax as the hybrid pulled out and shot his load all over Mabel.
The two then fell back exhausted as Steven kissed Mabel on the forehead.
