Mother's Fuck Toy

I'm John 25 answer to Johnny and my close friend Trevor 25 joined the army and I went to university. Trevor you're a military madman I would tell him growing up together, but he followed his dream and joined up. We've always lived close by each other; I attended the local university living at home with my mother Glenda widow. Jessica 49 divorced Trevor's mother lived alone other child has moved on marrying and moving interstate. I promised Trevor I would help his mother while he was away. Meaning mowing her lawn and generally helping her with anything she needed help with. I've had girlfriends and lost my virginity years earlier. Anyway, Jessica works as dental assistant and I found out didn't date at all. My mother dates and has a boyfriend, but she isn't interested in marrying again that what she has told me. Jessica goes to work does any shopping on the way home and stays home. I've always thought her nice looking but hadn't thought of bedding her. Then Glenda went away to visit my sister and her new grandchild, I was home, I was on a break from my studies. My girlfriend was also away, I went to mow Jessica's lawn. I had done ours and so would do Jessica's lawn, Jessica came home after finishing at noon for the day. The dentist usually shuts at noon Saturdays, she said hello and went inside as usual. I finished up and she saw I was finished and asked would I like a cold drink. I said yes and went inside and sat talking to her in the kitchen. I hadn't anything planned and when asked what I was going to do replied nothing planned. She then asked me would I do her a great favor, but I wasn't to tell anyone about it whether I agreed or refused. I agreed not knowing what I was to be asked, she straight out asked me to sleep with as she was very horny. I was surprised and shocked at first, but I was interested as my cock went hard. I agreed and spent the rest of the afternoon fucking in her bedroom. That was last year, the sex is regular thing between us. I get sex twice a month on average sometimes more. We aren't in love it's just mutual fun, it doesn't stop me dating. All names changed for the story.