Wife Had Sex with Husband's Younger Stepbrother

The stepsister-in-law is bathing in the bathroom inside, the stepbrother-in-law is sitting outside and waiting for the stepsister-in-law to leave. After some time, the stepsister-in-law comes out of the bathroom wearing a towel, she is shocked to see the stepbrother-in-law sitting in front of her, but the stepbrother-in-law goes to the stepsister-in-law and comforts her, tells her that there is no one in the house and I want to do something with you.