This happened to me when I had finally come to terms with being bi , in my fifties! I needed a woman there for me to act and thought it would never happen, but..... At an hotel on business, bored and alone and a fit looking couple my age stared to chat. They were obviously happy and great fun and after a while I asked what was the secret of such a happy and long marriage. Well they smiled ,exchanged a nod and told me that they swing , but only together with both of them joining I writhe the right guy or girl. I was amazed at their frankness but complimented them on a grown up approach, making it clear I approved and was envious. A few drinks later and they invite me to their room. It was awkward at first for me but Jan said she and Dave's always started with a three way kiss sequence and then an undressing taking it in turns to remove someone's clothing items ( we all laughed at rule number one....shoes and sock off first). When Dave's turn to kiss me came I nearly fainted with butterflies but wow! I chose his trousers next and had to rub my face against his erection. More details to come if wanted , but the first sex had me licking Jan's clit and Dave's licking and lubing my ring as I kneeled. The Pleasure of being penetrated was worth the pain and I then ended up with cock near his wife Jan as he fucked me.....more?....