The party was going to be low key. My wife, Dianne, only wanted something small to celebrate her fortieth birthday. Knowing she wasn't happy about turning forty, I reluctantly agreed.
A few months back, when she announced she wanted to join a gym I backed her up even though I assumed it wouldn't last. I'd been wrong. For the first month she had been keen and then she started finding reasons not to go. Somehow she made friends with a real gym-junkie called Gemma. Gemma's enthusiasm rubbed off and Dianne started going regularly and I soon noticed a change. She lost the few pounds she'd been wanting to. Her stomach flattened and her whole body became more toned. In short, she was looking hot by the time her party came around.
She'd warned me about Gemma but I think my jaw still dropped when the black gym-goddess stepped into our house. Gemma was Jamaican with skin as black as anyone I'd even seen. Her miniscule skirt showed her fantastic legs, which were impossibly long. The nearly non-existent blouse allowed a great view of her breasts which were surprisingly large for a gym-junkie. As we were introduced, she gave me a beaming smile that caused a stirring in my pants. God was she hot!
The room had gone quiet as she entered but slowly the party went back to full swing though I doubt many men's, and some women's eyes ever left her. Mine certainly didn't. Gemma seemed oblivious to the attention she created and moved around the room chatting freely with people she'd never met before and may never meet again.
The other guests were mainly family with a scattering of friends so the mood was light and comfortable. There wasn't any set program other than for the cutting of the cake. We'd all had a few drinks by the time it was ready to come out. I looked around but couldn't see Dianne anywhere. I checked the bathrooms and our bedroom without luck. It was a warm night so I slipped into the rear yard. Why she'd be out here I had no idea but there was nowhere else to look I knew we were making a bit of noise, so not to annoy the neighbours any further, I didn't call out.
Stepping around the corner of the house and found her. Dianne and Gemma were locked in an embrace. My first instinct was anger. The bitch was cheating on me! In a flash I remembered how keen she'd been lately to get to the gym. This was why.
I was ready to say something when I realised Gemma was looking at me. She and Dianne were kissing but her eyes were locked onto mine. That was when I realise how hard my dick was. Instead of calling out, I continued to watch. The bitches were really getting into it. I'd watched more and a couple of pornos but I'd never seen anything as sexy as this. There was always something fake about the sex in a porno. This was real. Not five feet from me, my wife and another woman were kissing. And Gemma wasn't just another woman. She was the sexiest woman I'd ever seen and her hot tongue was halfway down my wife's throat.
My dick was so hard it hurt and I longed to take it out and jerk off. Even better would have been to fuck Dianne while she kissed Gemma but I didn't want to break the mood. Gemma knew I was watching but she'd done nothing to alert Dianne. As far as my wife was concerned, they were still alone.
Gemma gave me a wink as she unbuttoned her blouse. There wasn't much to it so I already had a pretty good idea what her tits looked like but I wasn't ready for how hot her nipples would be. Jutting out from her firm breasts they were swollen with lust and a black as nigh. Taking Dianne's face in her hands, she gently pulled my wife's mouth down to one of them. I heard the wet sucking sounds Dianne made as she worked on first one then both nipples in turn.
Gemma threw her head back, causing her many slender braids to sway back and forth. With her eyes sill locked onto mine, she cried out, "That's it bitch, you begged for them, now worship my nipples!"
Dianne broke off only long enough to gaze up into Gemma's gorgeous face. "You know I'd do anything for you!"
Gemma was smiling at me as she said, "It's time for your birthday present, bitch." She ran a hand down Dianne's body and pushed it up under her dress. Dianne was back sucking on Gemma's nipples but I heard her moan as the hand stroked her pussy. "Take your panties down for me, bitch!"
Instantly, Dianne's hands shot under her dress and her panties were soon around her ankles. I watched as she pushed her legs as far apart as her panties would allow. When her back arched, I guessed Gemma had worked a finger into her pussy. Dianne's hips were grinding now and I knew she was really enjoying being fingered by this black goddess.
"Hold up your dress."
Gemma didn't explain why and Dianne certainly didn't ask but when she hoist her dress high around her waist, I had a perfect view of her grinding ass and that black hand between her pale, white legs.
Unfortunately, it finished all too quickly. Dianne was so hot, she started a knees shaking orgasm after only a minute or so of fingering. The bitch had never cum that quickly for me. Gemma gave a nod to say it was time to go. I ducked back into the house and waited for thirty seconds or so. Opening the rear door with a bang, I called out, "Dianne, are you there?"
I heard giggling before she called back, "What is it?"
"Time to cut the cake."
I shut the door and went back inside so I didn't embarrass her by seeing her with Gemma. Dianne came in, looking radiant. Smiling, she stepped to the cake and cut it. I noticed Gemma enter by a side door. She smiled and I looked away.
I forced myself to wait as long as possible before sidling over to her. "Hello, Dave." The bitch was still smiling. I'd had some time to think about what had happened now and I was undecided whether I should be angry or not. "You want to explain what that was all about?"
"Smile, Dave or people will think you're angry about something."
I hadn't realise I wasn't but I forced a smile. "I'm waiting."
Dianne gave a shrug. "What's to explain, your wife's hot for me...but you already know that!"
This wasn't going as I expected. I stammered, "How long as it been going on?"
"I don't know, a month, maybe longer. I needed a new towel bitch and Dianne had been begging me so nicely I gave into her."
"Towel bitch?"
"I have a number of women begging to be my bitch so I give them little jobs to keep them happy. While I'm being washed, by my shower bitch, you wife kneels on the floor outside the cubical, holding my towel. When I'm finished, she dries me."
My senses reeled as I struggled to take this in. "Are you telling me, Dianne kneels on the floor, holding onto your towel, while another woman washes you?"
"Isn't that what I just said?"
There was a sharpness to her tone now. "I'm sorry...I just don't get it. Wouldn't that be just a little humiliating?"
Gemma smiled now. "What would be the fun if it wasn't humiliating?"
"Then...why does she do it?"
"All my bitches get a reward. Emma, my shower bitch is allowed to kiss my nipples."
"And...Dianne?" I asked, not sure I wanted to hear what my wife's reward would be for humiliating herself this way.
"Your wife is allowed to kiss my ass." Gemma gave a slight shiver. "And I can tell you, the bitch can really get her tongue deep up my ass."
I quickly looked around to see if anyone else had heard. I'd enjoyed watching Dianne and Gemma together but this had to stop. "I think it's time for you to find a new...towel bitch!"
"That is up to Dianne, don't you think?"
Before I had the chance to reply, she slipped away and started talking to my brother and his wife. I could hardly go over and tell her to leave my wife alone now, which I guess was why she picked Nick and Gloria to flirt with.
Tonight wasn't the right time. I'd allow Dianne to enjoy her birthday before telling her I knew about her and her black gym-goddess and that it was time to end it.
The party had been spoilt for me now and the night dragged until it was time to wind things up. Gemma had managed to stay away from me and I wasn't ready to talk to Dianne. Eventually, I looked around but didn't see Gemma. I searched for Dianne but she was talking to her parents. I gave a sigh of relief. I didn't know what I'd have done if Dianne and that black slut had gone off together again.