Getting 'Caught' by Mother-in-law

For some reason, I've been attracted to my mother-in-law since my father-in-law died a few years ago. I wasn't before then, but after I just figured she probably missed having sex and all of a sudden I started thinking about her sexually. This is of course a big problem because she and my wife are like best friends plus she's a virtuous woman.

So, I've had this fantasy of her catching me while I'm erect and masturbating. I figured I'd play it off like I was asleep and left the door cracked open and she'd walk by, then I'd look through my cracked eye lids and see if she just walks by or stays around for a good look.

The problem is, there never are any times when I stay at her house alone. So, I figured I'd take a video of myself masturbating on my phone and 'accidentally' show it to her when I was going through some pictures of the kids.

I made the video today and tried my plan while I was over at her house doing yard work. She showed me a new picture of the kids and I said I had some videos and showed her three videos of the kids and handed her the phone so she could select the one of my wanking. I started off by filming a black wall, and then panned to my dick, which was really hard and I was pumping it good and was just a few seconds away from a cum shot.

When she realized what was going on, I said, 'Oh, whoops, that one's not for you and she laughed and handed me back the phone and put her hands over her eyes, saying 'I'm not looking.'

Later, it was awkward and I apologized saying it wasn't meant for her and that if my wife knew someone else saw it, she'd be mortified, especially her mom. My mother-in-law agreed whole-heartedly that it would be our little secret and that she didn't want to tell anyone about it. I said, 'I guess you haven't seen anything like that in a while.' To which she laughed and agreed.

We left it at that, and to be honest, I thought the interchange would have been a bit more arousing, but it wasn't, it was a big adrenaline rush though. Since it's 'our little secret,' I figured I could bring it up when it's just the two of us with the pretense that I'm so embarrassed about it still and turn the conversation over to a sexual nature.