Have you caught a dad with his Stepdaughter cheating?

The first time I saw him pleasuring himself I didn't know what he was doing, all i knew was that it made my tummy tingle. Then later he showed me what he was doing so when he left the bathroom doir open a bit I could see him. Seeing him do that gave me butterflies. Then he taught me how to pleasure myself. He showed me how to rub my clutch,, and how to hold his,,,, rod. So amazing!