That reminds me of the time a 28-year-old, versatile top like me met me to start a 3-way or 4-way I think back in 2010 (I was 55 and fit); we had connected through Megaphone (now Megamates for same-sex hookups). I was nude as usual when he arrived shirtless, and he quickly got nude himself. He's bi and married; as open as he was about it, his wife probably knew he was bi. He had a lean, swimmer's build, was smoothshaved, and had a cock 9 inches long with average thickness. I kept trying in Megaphone while he used his hotspot WiFi to search online in the fully lit living room. He sometimes stroked my 8-in-long, thicker-than-average cock, and I sometimes stroked his. After 1 1/2 hours, neither of us could find anyone--an unusually slow weeknight. We decided to give up, just jack & suck each other off, and try again later. He had mentioned early on that his back was a bit stiff; so, I decided to massage his back--nude is best because no clothing interferes with massaging all of a tight muscle. He had brought some lube to play; but, I learned from him that lube is better than lotion for massaging because skin doesn't absorb it and is water-renewable. Having had lower-back troubles myself, I knew that the lower-back muscles connect well below the waist. Since we had been comfortably nude together for almost 2 hours, I knew he wouldn't mind my massaging all his lower back and upper glutes. So, using his lube, I massaged his back and especially his lower back and moved behind to make it easier. My cock got harder as I massaged this young man's lean back. He had made it clear that he had never been fucked and, like me, is a versatile top with guys; so, when he unmistakably started to arch his ass, I was surprised; but, he continued to arch his ass. I put lube on my cock and on his ass, arched his ass more; he didn't move or resist at all when I pushed my cock in and started to fuck him bareback. Having been horny for so long, he shot his load, after a few minutes, on the floor just from my fucking him. He then somewhat sheepishly said, "I didn't plan for that at all." He put his shorts back on and got his stuff together, and we planned to try again for 3ways; we tried several times, but weren't able to arrange it.