Everyone in the following story is 18+.
The new kid at school, Ethan joined mid semester. No one really knew him yet, so he was kind of a blank slate. He was kind of plain looking, blonde, curly hair, but also on the handsome side. I barely registered that he existed, except briefly thinking he might be somewhat of a new competition for the chicks in school. On his first day, we got assigned as project partners in anatomy class. I wanted to get an early start, so we decided to meet after school at his house. When I got there, he didn't offer much conversation.
"Any siblings?" I asked, opening the textbook.
"Younger brother," he answered shortly, playing on his phone.
He didn't even bother to return the small talk back to me. He seemed bored with the whole thing, and barely looked up from his phone while we discussed what to do for the assignment, except to briefly point and giggle at an anatomical illustration of a man's reproductive system. While he continued to tap and scroll on his phone, I heard a bunch of notification sounds I didn't recognize, and saw he was on some chat app with a yellow and black theme, and lots of pictures being passed back and forth in the conversation, but they were too small to see what they were. Just as I was about to suggest we get started on the written portion, he abruptly said "be right back" and left the room. Of course he just fucking ditches me at his own house.
I got annoyed after a few minutes and went looking for him. I heard him in the garage, through the side door by their kitchen, and it sounded like there was another voice in there. Pissed that he was ditching me to hang out with his little brother and make me do the assignment by myself, I opened the door ready to confront him, but, to my surprise, I was greeted instead with the muscular butt cheeks of some late 20s dude, who clearly enjoyed going to the gym, while he was pounding into ass of my project partner. This faggot ditched me to get fucked in the ass, I thought to myself, pissed.
Ethan had his hands against his Mom's car as he had angled his ass to take the older guy's big cock. They both turned to look at me, not even bothering to stop fucking. They just paused briefly, when Ethan said, "Join in or get the fuck out." This pissed me off further. I just stayed there glaring at him, and the muscular man fucking him just went back to pretending I wasn't there. After a moment, Ethan looked up to me and said, "Well?"
I don't know what came over me, but I decided to take him up on his offer. If he wasn't going to be a good project partner, he might as well pay me back by pleasuring me. And I wasn't even planning to go easy on him, since, honestly, I had no respect for him after he bailed on our project. I tugged down my sweatpants and let them fall to my ankles, and walked up to him, wearing only my socks, and presented my dick and balls.