Caught in the act

This happened last summer as I belong to a few different gay groups, a young guy contacted me through one of them and wanted to meet and have sex. We agreed on a time and date for him to come to my place as I live in the rural area, which no one can see what is going in the back yard due to the size of property and all the trees around. We started by doing some sun bathing in the nude on the deck and soon after we were both getting very horny and started to kiss, cuddle and touch each other to the point we both had erections. We then started to lick, and suck each other until we both ended up shooting our loads. We then again laid down to rest a bit and get some more sun. After chatting for about an hour I convinced him to give me a fuck as he said he never done that with a guy before and he wanted to try it. I got into the position that he wanted, which was the doggy position and he put his hard 7” cock slowly into me. He started going slow and then got faster where he started me to moan with pain and excitement and at that time a guy came around to the back yard where we were and we just froze with fright. It seems he was a carrier from UPS who had been ringing the doorbell then heard noises coming from the back yard. My friend slowly pulled out from my ass still with a hard on and I went to sign my name for the package. The UPS guy never said a word about what we were doing and headed back to his truck. After being startled from that my friend started playing with his cock until he became hard and I got into the same position as before and again he slowly put his cock into me and started pumping away when shortly he shot his load into my ass as we didn’t’ have any rubbers and I also prefer bear back sex