Hi,
Yes, you have a sex addiction. It is not good for you and also for your relationship. As you are masturbating regularly since last 3 years. You have to get rid form this addiction. I lose gone through this problem for 1 year. I get rid by control my masturbate emotions. It helps me a lot. When you feel to get sex just make your self busy in doing some other work. It helps you too.
Good Luck!
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