Started as a Prank

I've always love playing pranks, so when I got a new neighbor in my apartment building, I couldn't resist. She was 25 pretty and too trusting, I 27 was considered a long-term tenant having been there almost 3 years. Not that the apartments were bad or anything, people came and then got better jobs somewhere else and moved on. I on the other hand had a great job and my apartment was the closest I could get to my job. So, it suited me to stay, my new neighbor quickly saw people move in and short time later they had moved out. All the apartments are one bedroom, so singles and couples only, also too close to an industrial area that deterred retirees. I let it slip that the building was haunted to my new neighbor and as some other tenant always looked sleep deprived, she bought you could say. Asked why I wasn't worried about ghosts; I told her I had an old Indian charm that protected me. She even bought that story as well; the apartment was old and had noises as old building do. Once she was aware of my fictional ghosts, every noise became ghosts. Other tenants didn't engage much in conversations as I did, they were always driven to succeed in a hurry. My neighbor had a good job herself, didn't plan on moving elsewhere. The apartment suited her as did mine, but my ghost stories scared. Especially in the wintertime as the water pipes became noisier most likely due to the cold. With ghosts implanted in her mind by me, she became very nervous. Even offered to buy my Indian charm, but I said I wouldn't sell. I found an old pouch with Indian design on it at stall at the market. Placed some dried herbs and beads in it, I had my old Indian charm. A cold snap made the noises louder, especially on New Year's Eve. She became so frightened that she asked could she sleep in my apartment, I agreed. No expecting anything to happen, but she was calmer on entering my apartment. The noises were still the same, but they didn't worry her in my apartment. Having only one bed meant we'd to share, I didn't have a lounge. During the night she cuddled up tight to me and I got aroused and we became lovers. I didn't take any precautions; it didn't cross my mind at the time to do so. She wasn't on anything herself, now she has missed her period, and a test kit showed a possible positive result, she is due for her next period shortly. If she misses that she will get tested by a doctor. But I'm still fucking her, albeit with condoms now. she has moved in with me as well. Of course, I've confessed my prank, no I haven't. I like the sex too much to be that silly and I was very surprised how it all turned out.