They were bound together, naked, tight straps behind each of his knees looped around her calves. Her firm breasts were pressed against his chest by the weight of her youthful body atop his. Their hands were tied – his pulled into the small of her back by the cord that held her down. Her arms were pulled out and upward, fastened securely to the upper bedposts, just at the edge of being uncomfortably taut. His ankles were bound to the lower bedposts. Between them, there was no escape.
He shifted, testing his mobility, fighting the tingle in his loins that preceded a coming erection. That would be the worst thing right now. They had discussed sex a few times since starting college, but were both saving themselves for marriage. They weren’t unhappy making out, fondling – as long as that line remained uncrossed. That was before the party last night, and the sedative quietly slipped into their drinks by their supposed friends. Now whoever had done this leaned in close to them, stroked his girlfriend’s hair, and whispered, “have fun you two…” Then she checked their gags once more before closing the door behind herself with a click.
His erection started then, growing inexorably upward, ever nearer to his girlfriend’s virgin slit. She shifted, head moving to the side, her silky legs stretching vainly in their bonds. He could feel her pulse quickening, and then – a drop of moisture on his crotch. She was getting wet. This must be the best (or worst!) time of the month for her. Every month she would wear those black panties to hide it, but when they were letting their hands roam he could feel that extra slickness right through them.
Now there was no fabric between them. Her attempts to free the two of them were only heightening the sensations. He had to get them free. He pulled as hard as he could then, earning a cracking sound from the bed – and a muffled squeal from his lover. Her wrists were being pulled painfully by the cords and he stopped immediately. She sighed and placed her check against his. The smell of her hair was heavenly. He extended the fingers of one hand and cupped one round globe of her ass. She tensed her thighs around his cock. This was escalating.
The rubbing between her thighs was dry and uncomfortable at first, but then he felt his penis begin to spread her labia, his passage eased by her fertile slickness, and quickly tried to pull back. The bonds on their legs offered no room for escape. He looked over at her – awkwardly, this close – and saw her closing her eyes, her lips relaxing on the ball gag as his attempts to move just teased his head in and out of her entrance instead.
He was almost at full mast now and suddenly felt resistance. He didn’t know if this was her hymen he felt or if she was just tight from fear, but either way the sheer thrill of the situation took over and he began to press firmly forward. Her eyes shot open and she bit down on the ball gag, her white teeth flashing. She looked him directly in the eyes and after the barest of pauses she suddenly flexed her abs against his stomach and impaled herself.
The feeling was incredible. This was what they were avoiding? The walls of her canal rippled along his shaft, and as she lifted her breasts off of him he pressed her ass back down with both hands and crushed his pubic bone into her clit. She was moaning now and he felt the warmth from her defloration trickling. The bonds cut into his ankles and he could see her wrists beginning to bruise. Her eyes closed and her breathing became heavy. He could feel his semen rising, his balls tightening as he began to leak pre-cum into her. They were over the edge now, in moments their worlds would explode, and their future change, irreversibly.
Their friend opened the door just a crack to sneak a look. Her plan was working beyond her wildest expectations and it was just. so. hot. She worked her clit through her panties frantically as she watched them grinding. Oblivious to her peeping, their rhythm slowed. He moaned and shook, once, twice, deep rocking motions as his girlfriend gasped. She could see his balls pulse and twitch, flooding her friend with potent semen.
He felt himself relaxing, his penis growing flaccid and retreating from the mix of fluids now saturating his beloved’s most tender regions. Sweat shone on her forehead and matted her hair. She smiled awkwardly around the gag at him just as the door creaked open. They quickly craned their necks, trying to see who it was, to no avail.
“I think I can set you free now”, the intruder laughed, her hand hastily pulling her skirt back down. She swiftly undid their legs and then fled before he could untie the rest of their bonds.
Source: reddit.com/r/sexystories/comments/cc87pe/tied_together_by_a_friend_mffirst