I discovered my Sister's secret

I'm Arnold 27 geek I'm called and had no luck with girls at all. I've a sister Megan 23 party girl didn't go to university like me and so works several low paid jobs to get by. I finished university and got a great job straight away, which came with a 3 bedroom 1 bath apartment close to where I worked. Anyway as a virgin I wanted to get laid and finally got up the nerve to just that. I overheard some other men at work talking about a bar where you could get serviced, all you had to do was put money under a red mat on the bar or table you were at and depending on how much you put there you got the service related to that amount. For example $20 got you a blowjob with condom, $50 you got laid with condom. No condom no sex, for intercourse they took you to a room. Blow behind a screen in the back corner. It was a bar I knew of, but hadn't been in and so I decided to give it a try. I went on a Wednesday night as others from work went there on Friday night and I thought it would be less crowded. I was right it hardly had anyone in there and I saw no women. I bought a beer and sat at a table and put $50 under the red mat, when the barman wasn't looking. Then I heard Arnold put that back in your wallet, I was shocked someone knew my name there. I turned and saw Megan she worked there, I did as told. She asked why I was there and I said you know why. She said I finish in half an hour and we will talk, you wait for me. I just nodded and she went and got me another beer. When she finished she got me to walk with her towards her bus stop, she asked why I was trying to pay to get sex. I said I wanted to lose my virginity, she smiled and said your lucky big Annie wasn't there he would've given you a real draining. She then asked where I lived I said in the next block on the other side of the street. she was shocked that I lived in such a high class area and I said the apartment is part of my payment package. I want to see it but my bus is here and she asked me my actual address and if I would mind her coming by sometime. I said your most welcome to come by I'm home all weekend and gave her my cellphone number and address. Then her arrived and she left I thought about going back to the bar but decided not too. Saturday morning at about 10 my phone rang it was Megan and she was walking towards my address, so I went down to meet her and took back to my apartment.
She liked my apartment said was better than the flea hotel she lived in. So I offered one of my spare rooms if she wanted, that took her by surprise. She said she would think on it and after an hour she left to work. Sunday afternoon she rang and asked was the offer still open and I said yes. She said there was a police raid on her hotel and there would be more trouble later so was getting out before it started. She had packed her 2 bags and would catch a bus, I said catch a cab and I'll pay it on your arrival. So that what happened she arrive in a cab I paid it and took her and her bags to my apartment. Then the following weekend she came home early from work, she hadn't even started as she was almost got there the police started to raid it so she turned around and came home. I can't go back there now, they will close it down for sure. Jobs are drying up she said, anyway she didn't have to worry about rent. The next week she looked for work with no luck, then to my surprise she asked me did I still want to lose my virginity. I was shocked at first but nodded yes, she said I'll take it from you and it will give me some cash. If you still willing to pay again I nodded and passed her $50 and she smiled and took me to my bed. Best $50 I ever spent, she really drained me twice and also stayed the whole night with me. In the morning I offered her more money she said no I've just paid her back a bit for helping me. I finally asked could we do it again and she said if I wanted and she would train me and if I supported her until she got other work. So Megan became sex educator and after several months of her training she said I was great lover. I still wasn't comfortable around women and said I wish I could marry you to Megan. Her reply was I like being with you also and will stay as long as you let me, I very comfortable around Megan now. So I replied so your staying for ever then, she smiled and I asked her did she want children. Yes but I can't see myself raising children with the type of man I'll attract. I said you could have my children and be my wife. That shocked her and I continued there is every chance the children would be very healthy as there isn't a history of incest in our family. She was still shocked, but smiled at me, so I asked her to stop taking precautions and we'll test it out. She finally said I'll have to think it over and what would mom say she added. Mom has always said she wants us to be happy and having children with you would make me very happy I answered. Our mother Cheryl 50 widowed lived in our old hometown alone and so I rang her and asked her to visit us, which she did. While Megan was out I told Cheryl of my offer to Megan, which at first shocked. But she knows me very well and knew I wouldn't ever find a woman to marry left on my own. But she said she would've to think it over as well. Anyway she talked with Megan about my idea of having children with her. Megan said I was the best thing in her life at the moment and only having a child with problems stopped her agreement. Cheryl said if she got pregnant any problems would be found before the baby was born and it could be corrected. Cheryl left to return home, but was only going to sell up and return to live with us. As Megan had agreed to at least give it a try once. She and I stopped all precautions and Megan was pregnant by May and Cheryl was already back living with us. So far the baby is very healthy and Megan is happy being pregnant and wears Cheryl's wedding rings.