Just sat there with it in my ass I'm a very sexual guy and in a straight relationship but every now and again have an uncontrollable urge to fuck and suck a guy. Not that she knows this but I love out these desires behind my girls back. As a way of releaving the guilt I let my girl have 3somes with me and another guy from time to time so that she is fucking someone else too. Well a month ago or so these urges came again so I went out to the usual club I go to when my girl was staying over her friends house and pulled a guy. A black dude who had a MASSIVE dick. I knew this as I felt him up in the club and the thing didn't seem to ever end. I took him back to mine and got him on the bed, released his member and went to town sucking him off while he just lay on his back. After a while I stripped down, straddled him and slowly...and I mean slowly...eased his fucking huge dick in to my ass. I couldn't even move for quite sometime as i thought it would rip me and felt like it was in my throat. Just as I began to bounce I heard the front door close and a few seconds later there was my girl staring at me with this foot long black dick in me up to his balls. The excitement of me sat in fear and Tensing up must have done it for my friend because he let out a moan and I felt his cum burst out inside me. I tried to ease myself off this dick but before I could my girl had left without saying a word and the door shut behind her. I've not seen her for about 3 weeks now but every now and again a friend of hers will turn up to get her stuff.