Brother-in-law has sex with sister-in-law

The brother-in-law liked his sister-in-law but he was afraid to say anything to the sister-in-law, one day the sister-in-law had to go out, so she gets ready and goes to the brother-in-law and asks him how I look, the brother-in-law praises the sister-in-law and on the pretext of praising her, slowly starts trying to impress the sister-in-law and then has sex with the sister-in-law.