Caught masturbating in shower by stepson

Walking around my bedroom in just my robe before going to take a shower I notice something on the floor. I bend over to pick it up. When I turn around I see my stepson standing there. He's staring at me. Then I notice the huge bulge in his pants. I order him out of my bedroom. Still shocked by what I just saw I go into the bathroom to grab a quick shower. Once in the shower I find myself thinking about my stepson and the huge package he must have. I begin to rub my pussy and masturbate. Looking up I see him again! At first I'm angry but quickly find myself wanting him to stay and watch as I use a toy to masturbate. After I cum I tell him to get out and he better not tell anyone what just happened,