When I asked her to clarify ‘perform’ she told me she wanted me to strip, jerk off and cum in front of the three of them! I was gobsmacked because...I could tell she was serious and then laughed saying ‘no chance’ as I climbed out of bed and headed for the shower. On my return she told me to sit down and she slowly started stroking my cock and said that the ‘performance’ was a means to an end. She told me that she believed that after seeing me that one or the other would join us in a threesome. I turned the sound up as the couple began fucking and didn't hear the front door open and close and my girlfriend hearing the fuck sounds coming from upstairs came up to investigate! I continued to toss off unaware my girlfriend was now standing at the door watching me watching dirty amateur porn and wanking off ! The couple changed postions and at the quiet period i heard a moan coming from slightly behind me! I turned around and looked at my girlfriend, her eyes closed ,her knickers round her. I let the head of his cock free from my mouth and then I started to kiss and lick down his shaft towards his balls.I licked the hairless sac and pushed his balls around in it with my tongue and felt his cock on my cheek. I sucked one of his balls into my mouth and I took his cock in my hand and rubbed it against my face and through my hair. Doug’s cock could not have been any hotter or harder than what it was now and I did not want to make him come anywhere else but inside my wet cunt. I was. This is so niceeeeeee…….lick my cunt baby……….she was moaning heavily. I bit her vagina lips……….ooooohhhhhhh it taste good. It can’t be compared with any other taste……I was in cloud 9. Don’t stop baby…………lickkk my pussy……….it is all yours…………ummmmmmm………uuuummmmmmmmmmmmm……..she was moaning like anything. She was caring my hairs and moving her waist.After 15 mins she curved up with her waist and pressed my head to her vagina. She had her orgasm……it spits all over my face. I tasted it, bit salty.