So my fwb (40F) and I (36M) were hanging out on Friday night. We decided to do some shrooms and go for a walk around the local park (we’ve played and fucked all over that park over the last year or so). So we were walking round, tripping out, smoking a joint and drinking a beer when the urge over came us. It was dark and late but we still were wary so we went off trail and snuck into the trees.. went a bit further on than the last times because we couldn’t really see. We start going at it, both naked (well she wearing a nice black lacey thing), fucking her up against a tree, doubled over holding her ankles, pulling her hair/head back.. it was awesome! Well… we must have been louder than we thought.. not 2 minutes after we came , we were both standing there naked and out of breath when all of a sudden some dude walks up to us! Says some story about hearing noises and thought someone was being killed or hurt.. we said nah just a whole lot of fucking! He then asked if he could watch! Told him he was like5 minutes too late… I thought my fwb would freak out but she kinda loved it and even agreed that if he came earlier she would let him watch! Now she’s never been watched or been in 3sums before (I’ve had a few) but this opened her up! Now we’re planning on going to a sex club next month to play in front of others and she wants to try 3 and more somes!! We then played around in a smaller park later that night while we could see people walking around… her panties were soaked as she stood there with my fingers in her pussy as we watched people walk past oblivious