Its getting late and everyone is leaving

It was getting very late and a few people were passed out, some had left and the party was winding up. Jack had fallen asleep on the couch and Jane was starting to tidy up some of the mess as most people were leaving or just waiting for Taxi's to pick them up. You decide to help with the cleanup as you're nice like that. Jane mentions that as everyone is leaving that she will need to take the dog out for a pee and or turd, you offer to go with her as it is dark and though the field she plans to take it too is just across the road from the house you say your concerned for her safety. She gets the dog ready to leave and puts her shoes on, bending low and giving you an eyeful whilst she fastened them and then using you as a ladder to get back up accidentally grabbing your hardening penis through your trousers whilst she climbed back up. You both leave and head across to the field with the dog, shes stumbling about so you put your arm around her waist to help stabilise her. You let the dog off the lead and it disappears into the field to do its business. Your both standing on the roadside whilst waiting for the dog, if anyone in the house was watching they'd be able to see you as the house faces you and the streetlights were on. Suddenly you feel something squeeze your ass over your trousers, its her hand. It only seems fair for you to do the same so you grope her ass too. You've been standing there about five minutes playing grab ass.