My Grandma's Friend

I mow and maintain my widowed grandmother's yard, widow of 3 years. I live fairly close by renting a cottage and 26 and employed as a plumber. My grandma 67 has a widowed friend 60 who lives a block away from my gran. She was visiting my gran when I was doing her mowing and she asked my gran what I charged, nothing was the response he's, my grandson a very good grandson. She asked my gran about me doing her yard as well, saying she will pay me. My gran called me and asked me in front of her friend I thought I better agree and said I would let her know how much after I saw what was required. Next day gran and my parents went to visit my sister and her family. I was on call and so stayed behind, decided to check her friend's yard and give her a low quote. I do date but wasn't in a relationship at the time. Her home was a cottage similar to mine and had an even smaller yard than I did, no flower bed just lawn to mow. So, I said $10 dollars to mow and trim her yard, invited in and with nothing on I went in. Inside she straight asked me about bedroom services (her words), she isn't bad looking for her age. I felt my cock rousing and decided why not and we fucked twice. Only leaving because I got a call out, I became a regular visitor to her place for the next several months. But she decided to move closer to her only daughter and her family, selling her cottage. I got first refusal and decided to buy it, now I've a girlfriend 25 and pregnant who has moved in with me along with her horny mother 46 divorced. Both are nurses and work different shirts, after several weeks of no sex. My girlfriend told me to fuck her mother, I was shocked. But my soon to be wife, said her mother wasn't getting any and nor was I. So, I might as well help us both out, I asked how do you ask your future mother-in-law to fuck. She responded by calling her mother into our bedroom where we were. Asking her mother in front of me about letting me fuck her, she said OKAY I could use a fucking. Marrying in April after the birth of our son, her mother is passed the age for having children I believe. But has had her tubes tied anyway, so no accidents can happen. I was introduced to my girlfriend by my grandmother's friend and that led to our relationship.