My oldest teen daughters friends were partying like mad one day.I'd spotted this one nastier than most couple out necking behind my tractor near the barn,then they ducked into the hay loft.After a bit I had worked my way round to there and decided to have a look see on them.I drew close, then knelt and peaked through a hole into the area they had thought they were hiding in.They had both taken off all their cloths, the young man was laying back - the back of his neck was towards me. His sexy little girl friend was bobbing her face up and down on his rock hard rather long uncut cock while playfully twisting & fondling his shaft & nuts with her hands. Occasionally he would raise up and fondle her breasts and french kiss her.After a while they got into a 69'n way and spent quite a while orally & physically arousing & teasing one an other like that until they finally got into fucking. It was when they had changed into a position where he was pounding her in her ass that our,(mine & his eyes briefly focused on one an others,(?) ! At first I was startled and backed away - but after a time of not hearing him call to alarm to the gal of having spotted me I eased back over and began spying again. I could see that he was occasionally pointing and mouthing words without sound towards me.., he asked if I liked what I seen, if I like this sexy little bitch and if I liked his cock ? I was just staring away and kept nodding a positive yes - yes towards him. As they both begun questioning one an other paranoid of having been away from my daughters party so long and showed signs of less fucking I quietly withdrew from my little spying area and went back out of the barn.Later that evening as I worked out by an old camper, the young man came out to where I was.After a bit of silence I asked him how he was doing ? He surprised me when he said to me that I already knew how he was doing as he grabbed his large pants bulge - showing it off with a tight squeeze.Then he suddenly moved into the old camper door and gestured to me to come in.., my mind was telling me "No" as my legs were walking in ! Before I was even turning from shutting the door I felt one of his hands fully engulfing one of my ass cheeks, as I turned he just dropped to his knees in front of me and began undoing my trouser & briefs, pulled out my limp prick and started giving me head. I just semi-stood and leaned against the door while he got my prick hardened to cock status.He didn't quit until I blew a big gobbling load of my hot cum down into his un-giving up throat ! Of course I returned the favor and gave him a blow-job back, although I found him almost too large to get much more than just his helmet/head part of his big hard-on orally in, mostly I licked and gave him a hand-job. He finally gave out a yelp and came on my tongue & turned face cheek.We made plans to keep seeing each other, got dressed back up and then split out of the camper.Since, he has been coming over more & more, he's been mostly boning my ass and then having me give him head 'til he cums in my mouth or in my ass.., more so he's been getting off on or in me than I on or in him,(?). He keeps "warning" me if I don't favor him that he'll tell his school friends; One of who'm is my daughter ! ("I think I've created a Sex Monster" ?).