I had a surprise last night. SeXStoRY

I was down in my office watching some porn on my computer my girlfriend was upstairs with one of her girlfriends talking about girl stuff and making plains for the weekend. So I just figured that they would be talking and drinking wine and I could hear them laughing a way. So thought that it would be safe to get conferrable and masturbate to some good porn. I was watching three girls are doing this guy. The guy had his cock in this one girl’s pussy and the other was licking his balls and a finger in his ass. The third girl was playing with herself .When my office door flew open! Who was standing in the doorway was the two of them. My girlfriend knew what I was doing and decided to show her friend my new office. What was I supposed to do? I had my rock hard cock in one hand and the other on the mouse. My girlfriend told her friend see I told you so! They started to laugh and asked if they could give me a helping hand and or mouth. They striped down to there bra and panties. My girlfriend started to suck me as her friend played with my balls. I thought I was in a dream. At the same time the porn was playing on my computer. It must have given her friend an idea that I would like a finger in my ass. To my surprise she slipped one of her finger in me. Well it did not take long for me to cum after that. I shot a huge load in my girlfriend mouth she could not hold it all and it was running down her chin. Her friend said you should share and cleaned me and her up. I think this could turn out to be the beginning of something real fun.