Summertime mom

Long story short version. My parents divorced and because of my mother's drinking problem, I was given to my father to raise. I was 14 at the time and never saw my mother for 5 years and only got to see her because I came of age. My mother wasn't drinking as heavily as she was before. She had the odd breakout you could say and so I never saw her as my father would use any excuse to stop me seeing her. I didn't go to university and became an electrician; I was still training when I met mother and we had a good reunion. But it was only a short meeting, I was still training to be an electrician. I had started at 15 and it took 5 years to get qualified, anyway once qualified I got a job closer to my mother. I got my own place (rented) and worked shifts at a local factory and saw my mother every now and then. My father luckily didn't know my mother was in the same town, I hadn't said, he hadn't asked. I tried dating and had some success, but nothing led to a relationship. My mother worked in boutique and was always well dressed and only on the weekends finishing work did she start drinking. Pass out Sunday evening and awake fresh for work Monday. I had a weekend off and it was a long weekend, I had the Monday Holiday off as well. I wanted to go to the lake and decided to ask my mother to join me. She finished work at 1pm Saturdays and I waited for her to finish, getting her before she had a chance to start drinking. At first, she wasn't keen, but changed her mind as I drove her to her place. She grabbed a few things, then we headed off and arrived at the lake and checked into the local motel. It wasn't crowded as I expected, but I had already booked a room a month earlier. Anyway, sharing a room with my mother would be a first for me. We soon moved to the nearest bar, we sat drinking beer and not whiskey as she preferred. Getting close to dinner time we returned to our room, she wanted to shower before dinner, we would check out the nightlife after dinner. She asked me to shower with her and it was a bit of a shock at first, but I agreed. It was that day I found out my mother got horny drinking beer and didn't drinking whiskey she just kept drinking till she passed out. Anyway, with her washing me I got a hard-on and we fucked and then went to dinner. She continued drinking beer and we returned to our room and resumed fucking. I've continued fucking my mother ever since, even now I have a girlfriend and I bought a house nothing flash. I got my mother to move in with me, after my father found out she was living nearby. He doesn't call me now and keeps to his new family. My mother only drinks beer and regularly shares my bed and I gotten my girlfriend into bed with her and me for a threesome and she has agreed to move in with us. My mother doesn't date but enjoys sex and is pass having children so no problems there.