Is it normal that i jerk off into her slippers? "does she know"

I have a genuine adoration for pretty feet and have my entire life. I lusted for my wife's even when we're kids yet kept it a secret for 30 years until she found pictures and caught me sucking other women's toes. Since then things have changed and she very much enjoys everything, especially my desire for her! I do all her pedicures, (I'm good) buy her shoes, massage her regularly but nothing drives her wild like me worshiping and kissing her feet.

I have expressed many of my desires to her now, lots of nasty fetishes, but of course in still hide so many many more.

The one I'm questioning and considering confessing is that I often ejaculate in her slippers. I have covered a few of her sandals too but i am careful to not leave much of recognizable mess. However her slippers have been a different story. Formost they are a fluffy material and closed toed form warmth. She wears them religiously and they are well worn and full of sweat. I take them when she falls asleep and inhale them before exploding into one without cleaning up after doing so. Im not even cautious of putting them back even remotely like she left them. Some time I request that she take her socks of and wear them so I can sneak peeks of or sexy toes but truthfully I like the idea of her having it between her toes and would like her to allow me to do so in her shoes before she leaves wearing them all the time. Her panties too as a matter of fact. Just put them on or pull them up and head off to work.
Is this normal?? Do you think she knows?? Should I Stop? What will happen if I get caught?