If you masturbate often and don't feel the relief you expect, thus feeling addicted to sex/masturbation: is it really cumming you are after or do seek the intimacy that comes with sexual relationships? If it's the latter, you may not be "addicted", you just tried to use the wrong tool for the job (pun intended). While this may not bring any improvement to your situation, at least know that you are not broken. Trying to fix the longing for intimacy with masturbation is just like trying to fix thirst by drinking oil. It may seem related, yet will ultimately get you nowhere.