Riding my little brother's cock

I'm Alma 30 divorced no children from my marriage, but am now pregnant to my brother Orson 27 single and both our parents are gone. Also everyone we knew that were related are also gone. So when I got divorced from the two timing scumbag Donald, I went to live wit Orson. I called Orson my little brother, but he's 6'4" and built like brick wall. Neither of us done university and work low paid jobs mainly. Orson was working late one night and a group of teenagers we hassling a older gentleman and Orson told them to leave him alone and fuck off. One took a swing at Orson and was knocked to ground by Orson and then another and then they did leave. The older gentleman Mark 59 gave Orson his card and told him if he wanted a good paid job come and see him. Orson came home after and told me of the incident and I told him to go and see what job was on offer. Then we fucked as we had been doing since I moved in with him and caught him masturbating and got him to fuck me from then on. Orson went and seen Mark and was given the job as his driver and security guard for Mark. Mark is very skinny and short and also gay and lives with his partner Norman and as a part of the job Orson would have to stay at Mark's 7 bedroom 5 baths house in a separate servants quarters. He told Mark that I was his wife and Mark said I'm very welcome as well. Orson was on nearly 3 times the money he was getting before. Mark is very successful in his businesses and sometimes has to go to less safe areas. Mark also has housekeeper and 2 maids that clean the entire estate and gardeners. So as I was already 4 months pregnant at the time, I could just relax and use the facilities like the large swimming pool. Mark also had Orson do a security course and learn to use a gun and then licensed to carry one as a security man for Mark. Orson got another pay rise after completing the course. Last week our very healthy son Mark after Orson's boss arrived and I can see he will be spoiled by Mark and Norman who just adore him. Asked by Mark how many children we were going to have, I replied as many as God allows. Mark and Norman are going to the mountains for Christmas and Orson, me and Little are going as well.