I was 16 and my stepmom was 42, I was a virgin, the worst thing I had ever done was finger a girl.
I was at my dad's house for the weekend and he had to work on Saturday so it was just me and my stepmom Kim for a few hours, and she was very attractive. Long brown hair, large breasts, a nice round ass, and huge beautiful lips and bright blue eyes. While we were home alone we were in her and my fathers room and she sat on the bed and asked me to join her. So I walked over to her bed and we were talking and she was showing me some pictures on her phone when she passed by a photo of herself with her friends and my stepmom's nipple was sticking our from the armhole in her dress, but I ignored it and I don't think she noticed it either. She asked me to look in one of her drawers for her charger, and I began opening each drawer looking for it when I opened one full of lacy bras and panties and 'outfits' and saw a bottle of lube in the drawer as well as her tampons and tissues. She knew what drawer I opened and rushed over to me and shut the drawer apologizing saying I wasn't supposed to see that. I looked at her and said it was ok, I didn't mind and she looked at me angrily for a second and then smiled and laughed saying 'well at least you didn't see this' and she lifted her shirt and flashed her boobs at me for a second. I didn't know how to respond and just stood there with a smile on my face and she looked back at me and said 'I guess since we're home alone we'll have to make the best of it' and she started taking off her clothes and asked me to help her undress. She had me pull off her shirt, unbutton and take off her skirt, and pull down her panties, she then took the panties out of my hand and put them in her mouth and tugged at them with her hand. She opened the drawer back up, threw her plain old black panties to the side, and asked me to pick out things for her to try on. I started looking for the sexiest bra and thong I could find and then found a little nurse outfit, a maid outfit, a schoolgirl outfit, and a police women outfit, and she said she didn't wanna be in costume, just wanted the underwear. So I picked out a see through lacy bra and a skimpy matching thong and she put them on, then she walked me back over to the bed and told me to do whatever I pleased. I started touching her breast and rubbing her butt, and then started rubbing her clit and eventually fingering her until she squirted, and then she told me to take off my pants and she took off her thong and bra. She put my penis between her breast and started moving them back and forth and licking the top of my penis, and then she stopped using her breast and took my entire penis into her mouth, she was gagging, but when she came back up she told me to use my hands and force her, to face fuck her. So I did, she gagged and smiled and kept sucking on my penis and when I said I was gonna come she kept going and swallowed it all. And the she started using her hand to jerk me off and I came again all over her breast and face, and then she got on top and starting riding and grinding on me until I orgasmed yet again. After we had both come yet again, she moved down and started giving me a blowjob again and stuck her butt towards me and said to finger her ass, so I did. After about 20 minutes I came 2 more times and I continued to finger her pussy and ass and she started fingering herself and tasting herself and then she went into the shower to clean off my cum and then she came back and laid in her bed with me for a couple hours until I fell asleep, and about 2 hours later I woke up to her giving me another blowjob saying my father would be home soon and she wanted to give me one last thing before it was over. So she sucked and I came and she swallowed every last bit, and minutes later the door opened and my father was back. That was over 3 years ago, and he still has no idea that she gives me a blowjob everytime we're home alone.