I have been pretty blessed to have dated some of the ladies I've dated... well, some were rather crazy, but speaking on sexual horizons, I've been lucky.

I was almost 19, I had been active for a while already so I was rather experienced for my age. At least in traditional m/f sex with a few adventures sprinkled in. My girlfriend, I'll call her C, at the time had a key to my apartment and could come and go as she pleased. She was bisexual and I didn't take issue with her playing with others since I've never really equated sex to love. My one rule was that I didn't want dudes in my apartment if I wasn't home. Girls were fine though. I trusted them more than guys at the time.

She had one particular girlfriend, I'll refer to her as K, that she played with frequently. I had never had sex with her, but I always thought she was very attractive. I said to her once, "I bet she's real fun to play with", to which she responded, "oh yes she is". That was then end of the conversation.

A short time later, maybe a week or so, I come home. I walk in the door and hear the shower running in the master bath. So naturally I want to see my girlfriend in the shower, so I walked in. She and her girlfriend were kissing and fondling each other in the shower. My shower had sliding glass doors so I could see them in their full glory.

We had never talked about sharing her so I wasn't going to try. I apologized and turned to duck out when they both said "WAIT". K said "please stay" and C said " I want you to watch us". Of course who am I to deny them that, right? So I leaned against the door jamb and watched as they continued.

They were kissing and rubbing each other. Sucking and nibbling on each other's nipples as the water splashed against their bodies. Caressing and exploring each other slower and more passionate than I ever had touched a woman. I took mental note of how they reacted with each other.

As I stood there, rock hard in my pants, mouth watering, C turned off the water and slid the glass door open. She said you can keep watching on the bed.

I took off all of my clothes, except my boxers, and laid on the bed. I was so worked up from watching them. C came over and laid on the bed. K walked over behind me and placed her hands on my shoulders and her damp, perky, breasts against my back and whispered in my ear, "it's my turn to watch", as slid her hands down and tugged at my boxers.

I immediately flew out of my boxers. My cock was throbbing. I wanted C so bad. She grabbed my hand and pulled me in top of her.

There was no foreplay for me. She was worked up and wanted my inside.

I slid my hard member inside her hot, wet pussy. She was so wet I easily pushed all the way in on the first thrust without working at it.

K was caressing my back as I began to fuck. She slid her hands down and caressed my ass.

Then. On maybe my 5th or 6th stroke, it happened. K slid her finger knuckle deep in my ass and pressed forward. No warning. No working it in. (Apparently she put lube on her finger without me knowing). I instantly pulled out of C and sprayed cum all over here!!! "What the fuck?" I thought. I wasn't mad. I was shocked and embarrassed. I had never had anyone play with my butt before... I didn't know it would do that!

There laid C with a shocked and disappointed look on her face (she didn't know what happened at first and if never cum that quick before). K was sitting there giggling with lube on her finger and said "OH WOW! I GUESS YOU LIKED THAT!!!", and I sat there in silence with a red face.

Afterwards we all had a big laugh about it. We did continue our adventure after the distraction wore off. Oh, and K started referring to me as "Butt Stuff" in public instead of by my name.

And that was my quickest orgasm.