Desperate Aunt

I'm a nerd and have always been called that during my school years. I have run an internet business since high school; nothing flashy, but profitable. So by my finishing college, I was fairly well off financially. Not rich, but I had no school loans hanging over my head either; I had paid my own way. Got a good job in my chosen career and was paying off a house I bought instead of renting. My father's sister and only sibling was 18 years older than me. She had no family of her own, had once been married, had a miscarriage, and couldn't have any more children as a result, so her marriage ended. Didn't get any alimony from her ex-husband, as both had similar careers and financial potential. Then the company she worked for collapsed; no payout or any other benefit. Caught suddenly with no job and no potential jobs either; had just bought a new car before the collapse. So, not much money to rely on was left in her savings account. Rent would drain it away quickly; I was the closest relative who had my own house and could take her in. I did, with no qualms about taking her in. But as time passed and her prospects of a job worsened, she became more desperate. I was up for promotion, and it was to be a new position in the company I worked for. I would be entitled to a personal assistant, not that it was on my to-do list. I had barely thought about it at all; my aunt had read the description of my new job before I had been confirmed as having it. Once confirmed, my aunt had decided it would be the best job she could get. Living with me, she knew I didn't date and had no relationships. As I had said, I would let HR pick my assistant. She was a little concerned; her age or relationship to me might be a hindrance to her chances. She decided to get me to change my mind and pick her without HR involvement. So, she offered me sexual training to get the job. She would train me sexually if I hired her without HR in return. I wasn't sexually active but had paid to lose my virginity years earlier. Of course, I accepted, and she started sleeping with me every night thereafter. I told HR I wanted my aunt as my PA; they accepted that, no fuss. They said they believed she was perfect for the job after reading her resume. I never told that to my aunt; I feared she might stop having sex with me if I did.