Discovered Taboo

These past nine months I've been having a fantastic sexual time with an older man. It's nothing set in stone and we only have sex away from the place we both work.
He's such a wonderful lover with a huge cock. There's never a time when he doesn't have me orgasming multiple times, and I simply adore him taking me anally after he's tongued my pussy and ass. Something he loves to do.
My problem, if it is a problem, is he's, as I've recently discovered, my father.
He left my mom and me when I was two. Mom got rid of all his pictures, so I genuinely didn't know what he looked like.
What I do know about him, is he moved back to the city I work in, only four months before we began to have such amazing sex.
We're so good together sexually, and it's as if we were just meant to be together. When he's inside of me, either my mouth, pussy or ass, I feel like I'm completely as one with him.
No other lover has come close to making me feel like he does. And before I knew who he was to me, I couldn't get enough of him fucking me.
Now that I know, through a work system check, I ran for all employees during Covid, I still cannot resist him.
I'd even say, for me, the sex and intimacy has become even better and more intensely erotic.
At present he doesn't know, but I'm tempted to tell him, but fear it might mess up our sexual relationship.
I just don't know what to do.