Steamy incest mother and child bathing copulation

One day, I married a kind and tolerant man and was building a happy family. That person has a stepchild, Kota, who is about the same age as me, and one day, when I was masturbating in the bath after getting rid of my unwanted hair, Kota was peeking at me. From that day on, their relationship evolved from that of "mother and son" to a forbidden relationship. Now, I'm in trouble because he asks for my body almost every day... But I can't refuse my son, who makes me feel even more than my husband.