Blindfolded Neighbour

So I used to live with my parents (duh). My parents were good friends with their neighbours. So good even that they got a spare key of their house for when they accidentally forgot theirs which happened a lot. So one day the wife of the neighbours came to our house just for a chat. I was upstairs but I could hear everything. So she admitted to my mom that she and her husband sleep in separate rooms because she can't stand the snoring of her husband. She also said that she sleeps with a sleeping mask because she is so sensitive to light. If the sun shines a bit through the curtains she can wake up. I didn't think much of it in the moment. However when I was 16 I was so horny and I didn't want to just beat my meat. So I got up at 2 am, used the spare key to their house and went to the wifes room. I removed her sheets and she was sleeping naked. I jerked off to her and came on her tits. After that I went back home.
This was so thrilling that I did it some more times. However one night she woke up while I was there. Though she still had her sleeping mask on. She thought that I was her husband so she said “oh honey you can put it in my mouth if you like too”. So I did. She sucked me and then said that I can put it inside her and fuck her. So I did and fucked her and came inside her rather quickly. After that she said “thanks” and she went back to sleep and I went back to my home.
The next morning I was home alone and she came knocking on my door. She said that she knew it was me that she was fucking. “You really think I didn't notice that it wasn't my husband? Your dick felt very different. Though in a good way”. So we ended up fucking a lot when either of us were home alone.