My girlfriend asked what did I want for my birthday, my reply was to go to a swing party. at the time. She was not the adventurous type, worked for the State Government and always kept up appearances of being a respected person. My birthday arrived and she had organised to attend a swing party held for couples only, at a suburb fifteen kilometres away. At the time, I had no idea what was going on. I just drove and she gave me the instructions where to go.

The house was like every other house in a suburb, with cars parked out on the street.

"What's this place, I asked"

"Its your birthday present, your swing party, come on"?

I was truly taken back, locked the car, held her hand, then walked up to the front door, knocked. The door opened, a middle aged mature woman opened the door, dressed in a see through green netted top, a dark business jacket on, short short skirt with red heels.My GF handed her a $50 note, and we walked through the front door.

There was laughter coming from the back area of the yard, couples, four hot water tubs, with naked couples in them, we introduced ourselves, then sat down, and started chatting with a middle aged couple.My GF stayed with me for a few minutes, then stood up and disappeared. Some twenty minutes later, she came back, totally nude, with a big smile on her face, said there was a chap who was doing massages, and that she was going to have that done to her.

"Come on, its your birthday, get undressed and get into the pool"?

I did what she suggested, undressed there and then, most of the other couples I had been chatting with moved away with different partners, undressed and started to engage in sexual acts with each other. I followed the GF into where the massage table was positioned. She lay face down on her belly, then the well hung male asked did she want a massage or did she want the one with the extra trimmings.

"Just the massage, thanks, for now"?

I watched as his hands slid over her naked body, touching her butt and spending a little longer on her crack area, then rolled her over, doing her breasts, long slow squeezing of the nipples, breast flesh, down to her belly and onto her quim, more finger touching there. The GF had a smile on her face, once he had finished, she stood up, showered, then came out and we both climbed into a spa together, chatted with the couple we had met earlier, remembered their names, then we all went off into a bedroom for some group sex together.

I have never been one for sex in a bedroom, I find it too boring and restricted, prefer to be outside, so everyone can see what is going on. The couple we met were in our age group, the woman veracious for sex, her partner was like me, liked to watch his wife have sex with another. Going down on me while my GF watched was a whole new experience.

Swinging is not for everyone, you leave your morals and opinions at the gate, if you are easily raged by watching your partner having sex with another, then leave, it's not for you. The GF started to smile, wandered off, while the hubby was getting hard watching his partner sucking my penis. We never had real sex, she just wanted to suck a cock that was not her partners.

I left the bedroom, wandered around looking for the GF, and found her on a bed, being serviced by two males. That raised the temperature between my legs in an instant, hard as, watching her sucking a cock, while another was doing her dog style, her tits flapping back and forth in unison of the males cock going in and out of her slowly. When he had finished, casting the condom off to one side, the one she was sucking went to her rear and started to have sex with her.

Playing with mine, kneeling beside her, whispering what a good girl she really was, I could see cum leaking out of her mouth, she turned, looked at me, smiled, then said something I could clearly hear. When the second male had finished, slapped her ample butt, he pulled free, went to a shower recess, bathed his body and left.

The GF was spent, I helped her into the bathroom, washed her body of lube, then went back, dressed, said goodnight to the host and left early. In the car, driving back home, I asked where did that prim and proper respected middle aged woman go tonight. Her reply was something I had not expected.

"Correct, I do work for the State Government, was married to a boring man, who preferred to watch sport on tv every weekend, nothing exciting happening in my whole life with him, only sex position he knew was missionary, how boring is that. Then I meet you, totally different to anyone else I know, when you said you wanted to go to a swing party for your birthday, I had been wanting to go to one for years, to see what it was like, I found that house in the paper, was not going to miss that opportunity to go, so we did, I enjoyed it, what about yourself"?

Told her I liked finding her being serviced by the two males, neither of us knew, we chatted and giggled like silly children talking about some of the people we met at the venue, and vowed to return to another party, to engage in more sex with different partners.

We did that, but found there was something else that both of us needed, we joined the SH site, found out all the dogging locations within our city areas, tagged them them onto GE, then set about going to each location every Friday evening.

Buts thats another story to tell, along with meeting males in coffee shops with the GF wearing no underwear.