Nephew to aunt confession

First off….. I have a huge crush on my aunt, I know she knows that and she keeps it very much a secret as if she likes me being lovey to her because she’s not ever been married and she’s just about 55 years old and to me is still so sexy, like a 10/10. She keeps it so secret that I know when I call her she knows that I’m masterbating to her voice, I know she knows what she’s hearing because I go HARD on the phone for her and I’m dead silent. Second, I always tap her ass when I’m around her like never grabbing or ever doing some creepy shit but I show her attention and I know she loves it, what should I do ? One time I tried to make sure to open the door for her so I stood behind her …. (Had the groceries in one hand and hand my keys in the other hand) I had a very stiff boner and just couldn’t hold it in…. I started to pretty much dry hump her while unlocking the door … and becuase my hands were occupied I knew she knew she was feeling my dick. She didn’t say a word. Ever. I didn’t that a couple times too.