"Babe. Is that you??" she called from upstairs.
"Yeah, it's me!" he replied as he closed the door behind him.
"Oh, good, come upstairs. I have your birthday surprise." she called out.
Kicking off his shoes, he walked up the spiral staircase and found her standing at the top of the stairs in a corset, suspender belt with stocking and super high heels.
"Mmm, I like my surprise already." he said, feeling his dick harden as the sight of her.
"You wait till you see the rest of it." she said teasingly, reaching out to unbutton his pants. "There's more waiting for you in the bedroom." She pushed his pants to the floor and pulled him forward so that he stepped out of them. Then grabbing his ever increasingly hardening cock, she led him towards the closed bedroom door.
"What's in there?" he asked.
"This." she replied as the door swung open. In the bedroom stood another woman, dressed in a baby doll nightie and g-string and holding a black 8 inch dildo.
"Oh god!" he moaned as he realised that his girlfriend has invited over their playmate to have some fun for his birthday. "Happy birthday honey." she whispered, leaning up to kiss him hard on the mouth, while at the same time, their playmate walked over and slid a cock ring over his dick.
As the playmate stood up, she fondled his girlfriend's breasts and kissed her softly. "Now, fuck me!" his girlfriend ordered, breaking away from the playmate. "And make me cum".
She lay down on the bed and spread her legs, while he knelt between her legs and slid his hard cock inside her tight wet pussy. As he began to thrust, their playmate knelt behind him and began to lick his ass. "Oh fuck." he moaned, feeling the pleasure of being rimmed while fucking his girlfriend.
"And that's not all babe." his girlfriend said as their playmate inserted a lubed finger into his tight ass hole. "Keep fucking me bitch, make me cum and you will get your reward!" she said in an aggressive tone.
"What's my reward?" he asked, finding it hard to concentrate due to the sensations he was feeling in his groin.
"You'll find out soon enough." she said, her cheeks beginning to flush as her orgasm grew. "Oh, oh, my god!!!....Oh, harder, fuck me harder. I'm so close." she cried as he felt her pussy muscles begin to twitch in anticipation of her growing orgasm. He pounded her harder, acutely aware that their playmate had worked up to a vibrating butt plug in his ass.
"Ohhhhh." she moaned as she came, squirting all over his throbbing cock.