Aerosmith legend Steven Tyler knew he wanted to marry his new fiancee when she tied him up with an "old-fashioned" headband during their first bedroom encounter.
 
The rocker proposed to his longtime girlfriend Erin Brady on Christmas Day during a romantic vacation in Hawaii, and he has gushed about his future wife in recent interviews.
 
He has now opened up about the moment he knew she was the woman for him, telling TV host Ellen DeGeneres he fell for her during a kinky moment in the bedroom.
 
He tells the presenter, "She had on this hair band on around her head. She looked really old-fashioned, so I took her back in the room and she tied me up with it and I thought, 'I'm marrying this girl.'"
 
Tyler has been married twice before to Cyrinda Foxe and Teresa Barrick.