A man is kept hostage for some reason I believe it was for criminal purposes, he loves a woman and is cooperating to keep her safe. Infact the woman and the man keeping the main character hostage are lovers and maybe brother and sister. I remember the hostage see’s them in a hot tub maybe kissing. This film may be anytime from the 90’s. I believe it to be American and I watched it over ten years ago! It was a crime themed film, sorry I cant be more help.