Old Family Friend

Early last year my parents moved interstate to live closer to sister her family, my father had gotten a transfer. At 24 and the youngest of two I bought my parent's home off them with the help of a bank loan. I've great job with local electricity company, no real close family left close to me and in no current relationship either. Hard finding a girlfriend when you work shifts, some date you and the first time you've to work and can't take them somewhere they break up with you. Anyway, I've an old family friend living right across the street from me and got to have dinners with her every now then. Muriel 55 widow short at 4'8" nice figure and great rack and still good looking for her age. I'm 6'1". Always friendly towards me and likes to hug you on arrival, whether at her place or yours. Anyway, in July on my weekend off I was for filling a promise to Muriel, replacing damaged power sockets in her house kitchen mainly. I was wearing very old boardshorts and t-shirt as I'd put my most of clothes into my washing machine, I wait till I'm nearly out of clothes before washing and once one load is done put the finished load into the dryer and put the next load into the washing machine. Not an ideal situation, but it's how I operated. Also, on the list of jobs was replacing the kitchen's light fitting with another. The stepladder I was on wobbled a bit going up but steadied while I done change over. Wobbling again as I came down, but I got down okay, as was usual for Muriel, she gave me a hug. I turned the power back on checked everything for any problems none found. another hug from Muriel and that time I got aroused. The hug was like so many I've gotten from her before nothing unusual about it. Except that time, I got arouse and the old boardshorts were tighter than they should've been as I had outgrown them a few years before. So, my now erect hard cock made a bulge in my shorts for all to see. Muriel noticed it right away and was bemused by her effect on me, but then she just looked at the bulge for a moment or two. Finally asking me to show her my erection, thinking it was better to show than refuse I did. That way I thought she wouldn't tell anyone else about it. She suddenly started stroking it and then suggested we go to her bed, and she would get it down for me. I agreed mainly because I liked the feel of her soft hand stroking my cock. To my great surprise she not only stroked it she sucked it as well and I blew my load into her mouth. Hadn't warned I was about to cum, I said sorry and all she said I was I owed her. Unsure what she meant, I just looked at her and she undressed completely. Laying on her back, told me to get her off, so I started following her instructions. She then told me to fuck her, and I did as I was told, afterwards she said I wasn't too bad. I looked at her and she said we'll shower first and then try again. In all I fucked three times before going home, she'd really drained me. But I'd really enjoyed also, on getting home I got my now dried clothes out of the dryer and put the other load from the washing in the dryer. Thinking on what had happened I got another hard-on, just thinking of having a cold shower. When Muriel knocked on my front door, I'd left my screwdriver set behind. With Muriel visiting me I asked if she wanted another fucking, she replied okay why not. This time my bed springs got tested, we now have a mutual benefit type sexual relationship. Which includes text messages, if I'm working late shift and decide I would like a fuck on finishing I send her a text saying I finish at 1am will you be up. I either get a thumbs up emoji or a No. If thumbs up I go straight to her place, and we fuck if not straight to my own bed. She also sends me a flashing heart emoji when I'm at work and I send a thumbs up and go to her place for sex. On average we get together about 2 or three times a week. Have sex several times each time usually. I haven't tried to find another girlfriend closer to my age yet. I'm getting everything I need from Muriel, she even does my washing.