Well, I've been fucking my brother before I even knew my husband, and it was my brother who introduced me to him. Only after I got married I've told him that before I met him I had a colorful friendship with my brother, and for my surprise he told me he already knew. Well, he didn't knew but he felt my relationship with my brother was way beyond a brother-sister relationship, but he liked the idea and it was him who suggested for us to have a threesome. I was surprised but at the same time very wet because I've been dreaming about it for a long time.