His sister is a very controlling woman and, of course, has chosen for a husband a very soft guy. So soft that the family thinks he's gay. Sex between them was never good because the only place she doesn't like to have control is in bed and the guy doesn't know what to do when he has to be in control. This is why her brother gets in the picture. He was the only guy who is close to her that never let her have control over him. This made her pussy really wet. It was a petty he only found out this a year ago. He's now his sister's fuck buddy. The best part is that he's suspicious his sister's husband knows about them but doesn't care.