They were all good friends: John and Amy, Amanda and Ian. They thought it'd be fun to all do to a nude beach together. So they loaded up a couple blankets and a cooler with beer. They spent a relaxing day hanging out, swimming, and soaking up sun. It was obvious, John and Ian enjoyed checking out their girlfriends naked. The girls seemed to be enjoying themselves, too, and seemed to flaunt their nudity in small ways, like when Amy got up to grab her sunscreen, and on her hands and knees, was providing everyone a clear view of her exposed pussy. When the girls got to talking about sex, they noticed how their boyfriends were eavesdropping eagerly, but also uncomfortably shifting to hide their erections.
After an hour in the sun, getting worked up by sex talk, nakedness, and beer, they were all feeling good, and pretty drunk. The sun was going down and the beach had cleared out. They had it to themselves. It was getting a little cooler, but the alcohol kept them warm.
The couples were each cuddling up a bit on their own blankets. Ian and Amanda were wishing they had a little more privacy, so they could act on the feelings that had been building all afternoon. Just then they looked up and saw that John and Amy had just gone ahead. Privacy or not, John had rolled onto Amy, and slid inside her. She'd drawn her knees up, and wide apart to let him in. He humped her, as her hands reached around him, caressing and clutching his hair and sliding up and down his back. She was starting to moan as he pumped into her. She arched her hips to meet his trusts, gaining friction on her clit, and making her moan loader. Amanda and Ian stopped everything and just watched their two good friends fucking.
