My tall girlfriend and I spent a short holiday back at my home town where I had a small house generously gifted by my parents on my 18th birthday. While I was abroad it was cared for by one of my parent's employees. A cheerful widow of generous proportions in her early forties. I had once gone home unexpectedly and discovered her, stark naked, enjoying the ministrations of a younger man. She was terrified that I was going to have her sacked but I assured her that I wasn't bothered in the least. I said that she could use the house whenever she needed to. After all needs are needs and have to be satisfied I said with a grin. She was relieved and delighted and we became firm friends. We developed an easy familiarity and used to share some bawdy banter with insinuations of what we would do to each other if our ages were closer. She was also a great accomplice on occasion when I wanted to manoeuvre a situation to my benefit.
Usually when I was home Carmela would come in about 10am and give the place a quick tidy. Occasionally she would catch me as I got out of the shower and she would unabashedly take a good look and laughingly sigh saying if only she were 20 years younger. I had lost my discomfort of being naked in front of others by this time and made no effort to cover up. Carmela's appetite for sex was formidable according to the tales she told of her sexual escapades. She had a likeable earthy character and her large chest would bounce about as she laughed heartily while she narrated an especially funny story. Usually making fun of some lover.
The first morning of our arrival we planned to go to the beach and then join my parents for lunch. On the way out I looked at the girl's long legs and before we knew it her panties were off and we were going at it hammer and tongs. I was sitting on the living room sofa and she was astride me riding away. Carmela walked in on us suddenly and saw us, but we were still both fully clothed and the girl's frock covered her bottom. Carmela came into the room not realising that my penis was inside the girl and that we were making love. She thought we were just having a cuddle. The girl froze. I gave what must have been a very sheepish grin and Carmela's face changed as she realised what was happening. She started to apologise and leave but I lifted up the girl's dress exposing her naked white bottom. The girl reacted violently, she tried to cover up, then she lifted herself off me and realised that Carmela would see my penis inside her. She sank down again making my penis enter her deeply and she gave a sharp intake of breath. Her face was a picture! Carmela realised what I was doing and what I was after. She came over and with a broad grin she slapped the girl's uncovered bottom a couple of times saying words to the effect what a sexy backside. I thought my girlfriend was having a stroke! She was gasping for air, her face was crimson and with every slap on her bottom she was grinding onto me savagely. It hurt! I thought she was peeing but she came so hard she was flooding my front. Then she flopped down on me pinning me to the sofa.
Carmela left the room and came back with some cold drinks by which time we were sitting side by side on the sofa and I made myself decent although I still hadn't come and I was as stiff as a flagpole. The girl was so embarrassed she refused to speak or even look at the other woman. I turned her over my knees and uncovered her bottom again to look at her pink cheeks. She screamed but allowed me to do it. I said to Carmela, look what you've done to this sexy bum and as she bent down to look, I spread the cheeks apart to show a very pink, wet and swollen pussy. The girl squirmed in shame and I let her up. Carmela left and I made sure the girl got on her knees and relieved me of my erection.
My girlfriend and Carmela never became friends.