I've been with my G/F for 5 years now and I love her very much, but her older sister makes me very horney. I think about her sister while I masturbate all the time. There have been times when I've been at her sister's house by my self and I've raided her underwear. I place her thongs and such over my penis and masturbate with them. I've even released my load of *** on a few pairs (during the past years). And I have also done the same thing with almost all of her high heel shoes. I've never done this stuff with any other girls belongings. I just want to stop before I get caught in the act and lose my G/F.