I saw him naked and I wanted him

I'm Wendy 24 and due to the coronavirus I lost my job and I couldn't afford my rent and had find somewhere to live. Only family member living close was my uncle David 44 mom's younger brother single and has his own house. It was my mother Robyn's idea I stay with David, I wasn't sure as I hadn't seen him much in my life as he worked overseas a great deal and rarely visited us. But 2 years ago he returned home and hasn't left since, I've only saw him once since then. Robyn rang him and asked could I stay with him and he said no worries, I was most welcome to stay as long as I wanted. So 3 days later I moved in with David, he's of solid build and average looking nothing special. But 4 days later I had been sunning myself in his back yard and came to shower and walked in on David. He had just finished showering himself and was drying his face. So he didn't see me when I opened the door and got an eyeful. With the towel around his face, the rest of him was exposed to my eyes. His cock caught my attention it was at least 7 or maybe 8 inches on the slack, just dangling between his legs. I quickly left before he saw me, but I was still thinking of his cock. I had never saw a cock so large and couldn't believe it I had really saw it. The next day I was sitting reading and David again went for a shower and I went and spied on him thru the window. I got wet just thinking of it and wanted to see it enlarged to its full length. After several more times spying on him, I decided I should make a move on him. I had noticed that he played with himself in the shower, but the glass was fogged up and I just could make out him playing with his cock. It took several more days for me to build up the courage to join him in his shower. Then I took my chance and entered his bathroom naked and joined him in the shower. He was shocked at first and I saw his hard-on about foot in length. I took hold of his cock and started stroking it and then I started to suck it. He had relaxed about me joining him and fucked me in the shower and later in his bed. I really enjoyed the sex with him and started to sleep with him every night. Robyn 46 rang and asked how I was doing living with David, I replied everything was just great. Then she asked had I seen his enormous cock yet, I replied I had. She told me I should try it out as David is a great lover, he had regularly done her on his returns to the country. She also told me that she lost her job and was coming to join us. My father had left Robyn and me thirteen years ago and I hadn't heard from him since. Later that day after David had fucked me, I told him Robyn had lost her job and was coming to join us. David just said great.