My Sister-in-law

I'm 33 and married 2+ children and work for my wife's family business, I got the on leaving university after marrying my wife. All I have is because of my marriage, my wife has a brother and an older sister. Whose husband also works for the family business, that was how it was last year in May. They hadn't any children and seemed happy, but fate took a hand in June, her husband died in a traffic accident. That caused a great deal of sorrow in the family. But by August my sister-in-law was after a job in the business and was to be my PA, I'd been promoted to her late husband's job and would travel with me everywhere. Unknown to me, my wife and her sister were plotting, and I was the basis of the plot. The goal was to get the sister-in-law pregnant and keep it inhouse, using me as the semen provider. But I didn't know and wasn't playing ball as they say, finally my wife asked me what was wrong with her sister. I said nothing and she then why don't you sleep with her, I said because I'm married to you. They thought all men would play up with their PA's and that's why I got my widowed sister-in-law. I said if you wanted me to get your sister pregnant just bring her to our bed and we've a threesome. I was shocked but had kept my cool you could say. Anyway, that evening I'd to put up as they say and started fucking both my wife and her sister and getting the sister pregnant in December and I thought that was that. But it wasn't, I still had both sisters to fuck regularly and in April my wife got pregnant again, due shortly. I've also been told my sister-in-law wants 2 maybe more. So, threesomes are the norm for the next years at least.