Desperate Sister

My sister worked low paid jobs and was really struggling to survive, partied while at school and didn't study. I on the hand studied aced college got a great job/career and haven't looked back. My success was in my career and my finances, relationships I'd always came last. Three years older than my sister and when our mother passed away May 2024, father departed when I was 7. My sister was left to support herself, we know little about our extended family mostly passed on. Almost nothing about our father's side, after he left, we never saw or heard anything about him or his family again. At 34 I was almost at the top of my career path, no relationships and lived in the next state to where my mother lived. Her car accident going to work had stunned me. My sister and I never really mixed growing up, she was the cool girl I was the geek/nerd. So, she avoided me like I had the plaque. After the funeral she'd realized, her life was going to get a lot worse. So, she asked me straight out about her living with me, I wasn't keen at the idea. But realized I would've been expected to watch out for her by my late mother. So, I agreed for nothing more than honoring my what my mother would've wanted. I live in a 3bedroom apartment 1bathroom a lounge/kitchen and a balcony. I'm quite a good cook having learned to cook while at college. My sister doesn't cook, being in a new city unemployed as jobs she could do were in short supply. My sister is a survivor will do anything to make her life better. She quickly realized she needed a new way to survive, realizing my lack of personal relationships was her best hope. First, she started wearing minimal clothing around the apartment. Her actions had the desired effect, I'd to masturbate myself. She waited two weeks before catching me stroking my cock. Made me an offer I accepted straight away, SEX claiming she was also horny and we could help each out. We fucked and then she trained me to please her better. After several sex lessons she moved into my bed fulltime, she took the precautions, and I made sure she got what she wanted. She wasn't greedy she just wanted some clothes and a night out now and then, hence the clothes. Christmas 2024 work party she was there as my guest, her name tag said it all same surname as mine. I've never talk much about my family and nobody knew I'd a sister especially one who was good looking as my sister. So, my work colleague put 2 and 2 together and got it a 100% wrong she was thought to be my wife. I'd been thought the only single male in our section at the company. We had a great time partied harder than I ever have before and my sister did also. On returning home we went to bed together as usual and were both soon asleep. During the night I got went the bathroom, getting back into bed my sister awoke and wanted sex. So, we had sex and again on waking up in the morning. Some hours later my sister realized her diaphragm wasn't inside of her, having found it I think where she kept it. She told me we might have made a mistake, but from working next to married people and them trying to start families it took a lot of trying. So, I thought we would be okay, my sister missed her period than another, so she got tested by a doctor after some positives results from store bought test kits. The test came back positive, so she had every test going to make sure everything was fine all came back no problems. We decided to have the child, pretending to be married was the best cover. Most people we mixed with already thought we were. I bought weddings rings nothing flash as our mother had sold her after our father left her and us. With the birth of our baby daughter in September who we named after our late mother. My sister is a great mother and isn't into partying anymore. I'm quite happy being a father and we've made plans for another hopefully a boy next time.