All characters are over the age of 18 when the sex occurs
Ethan sighs as he takes another gulp of the water. The 20 years old is reading on his best friend's couch, hanging out at Jack's place like he usually does when he's back from college. He is feeling slightly anxious, due to something. Or rather, someone. The issue has been wearing him down constantly over the past several years, and he is near his breaking point now.
His friend's 18 years old sister, Sarah, has been in love with him ever since they were kids. It took Charles a very long time before he figured that out. Perhaps it started from how kind and affectionate he's always been to her. He could remember stroking her hair gently while cuddling with the girl on the couch and patting her head while watching TV together. Maybe Ethan would have been a bit more careful if he knew early on what she's feeling about him.
It's not that she isn't attractive. On the contrary, Sarah is the hottest girl he has ever known. With her long, blonde hair, piercing ice-blue eyes and pretty face, she is extremely beautiful. Her body is toned from hours of working out as her school's star swimmer and also going to a boxing gym, but retains feminine curves, with huge, round breasts and a muscular ass. Just seeing the firm derriere is always enough to send blood down to his rapidly engorged cock.
That makes it all the more surprising that she is so interested in him, given how he is so plain-looking, especially compared to her. It must be how sweet he is and the way he was so patient with her whenever she threw tantrums when they were younger. Heck, even now she can get carried away sometimes, and he'd be the only one capable of bringing her back.
The problem is how she has always handled her feelings for him. To start with, she's always been very possessive, clinging to him. At first he thought it was cute, still seeing her as a little sister, and tolerated it, until it got to the point of her glaring at any girl near him and progressed to threatening violence against other people who got too close to him for her comfort.
Once, he and Jack actually had to restrain her before she could punch one of her friends who was hitting on him. That was when he figured out something was going on and was able to get the truth from Jack, who felt he spent enough time being embarrassed about it. Who wouldn't be embarrassed by his sister stealing his best friend's boxers? Finding out about that led to him and their parents giving her a very stern lecture.
Still, the younger girl's constant efforts to always be near him has gradually made him overlook all of the faults and begin to fall for her, the way she is already in love with him. He knows it wouldn't take much longer for her to win. It's only a matter of time. What Ethan doesn't know is that it is destined to happen this very day, just about any moment now.
"Hi, Ethan!" she calls out, walking into the living room, wearing her exercise clothes. Sara grins mischievously, feeling his brief gaze on her thick thighs, only halfway covered by the booty shorts. There's nothing she enjoys more than making him blush. His face is scarlet immediately, as he stammers and tries to say something coherent. "Listen, I'm really tired of beating around the bush now."
"What are you talking about?" he asks, gulping slightly as she moves closer to him. Why does he have to get so nervous in these situations? They've known each other for almost their entire lives, for Christ's sake! He shouldn't be freaking out just from his friend's sister approaching him like this. It's absolutely ridiculous for a 20 years old to react this way and yet, here he is.
Sarah smirks at him as she places her strong hands on his shoulders. "You know damn well what I'm talking about. I want your dick in my pussy and I'm going to get it." Damn. She's never been this blunt before. The dick she is talking about is getting hard in his pants and she can see it. The bulge is self-evident. It's obvious to her that she's successfully aroused her long time crush with her words.
"W W Well, I mean," Ethan finds himself stuttering nervously before crying out as she suddenly grabs his wrists and yanks him to his feet. Then she drags the guy straight to her bedroom, having waited long enough. Without further ado, she slams the door shut behind her and rips his clothes off, practically tearing them from his scrawny body, revealing his thin frame. Licking her lips, she takes off her own clothes too, never taking her eyes off him.