~A few months later~
 Simon and Alvin's brotherly relationship had grown into much more. Nights of fun when Theo and Dave were asleep, days spent together when they could get the time. Though it seemed to Alvin that their time together was slipping through his fingers.
 So, he planned something special for the two of them, today he would call them in sick, using a recording of Dave's voice he spliced together, and they would spend the day at the park down the street. 
 Morning passed quickly and when the chipmunk trio dashed to catch the bus, Theodore falling behind, when Alvin and Simon rounded the corner Alvin pulled Simon through some bushes, clasping his hand over his mouth. He waited for Theo's telltale huffing and cries to wait up to pass and for the bus to sputter away before letting his blue clad brother up and letting go of his mouth. 
 "What was that?!? I missed the bus and - DEAR GOD I HAVE A TEST TODAY! YOU-" Simon was interrupted when his brother's lips met his, leaving him with a look on his face that Alvin could not place.
 "We can spend the day together, hang out at the park until Dave leaves and..." Alvin smiled and raised an eyebrow. Everything went according to plan. The park was wonderful, the sun shining, practically empty save for a few joggers.
 When they got to the house Alvin was all hands, running through Simon's hair, fur, down his back, pulling off Simon's hoodie and his own, softly stroking, rubbing, and pinching Simon to erection. Alvin's tongue thrust wildly into the other chipmunk's mouth.
 "I bought some things with Dave's card." Alvin removed two items from his hoodie pocket. First he placed a vibrating cock ring, that was quite oversized, on Simon's sheath and balls. Then Alvin lubed up a small vibrator and pushed it in Simon's puckered anus and flicked the small power switches.
 The sensations were nothing like Simon had felt before. A hand gripped his shaft, rubbing, lips closed over his head, suckling, licking. It was coming, electricity building in the tip of his dick, his heart beating intensely, breath forcing itself in and out and then, all at once, all the pressure building within him was released, Simon bit down on his lip. He felt as though he could lie there forever.
 A hand hoisted his head up, a tongue probed his mouth forcing his own semen in and he found himself looking in Alvin's eyes. Simon traced his brother's ears with his fingers, following the crevaces of his body down to his hardened length and pink opening. Simon's hand spread the growing pre across the munkhood and he thrust the earlier discarded dildo in his brother's tight rectum before turning it on and driving it deeper to find Alvin's premature prostate. Alvin thrust his hips, needing release.
 "Simon-uh... I- ah!" Simon slowly accepted Alvin's dick into his mouth, getting as much as he could, sucking hard, dildo pistoning. Alvin could hardly stand it, his stomach fluttered and his cubby balls contracted. Suddenly the warmth surrounding him left, his seed burst pointlessly across his chest. Slowly Alvin recovered and got up to see Simon laying, in the fetal position, on his own bed. Slowly he began to weep.
 "Simon, are you okay? What's wrong?"
Simon steadied himself and took a deep breath. "I don't think I love you."