Think of it this way, if u keep watching porn n doing all z unnecessary stuff, be sure you're gonna lose her. So if u love her that much, change yourself to not lose her. Everytime the thought of watching porn and doing "that" enters ur mind, remember her. Remember that u will lose her if u keep thinking and doing this stuff. And telling her z truth will also strengthen your r/ship and am sure if she loves u, she'll help you get over it. Actually u should tell her, then everytime u have that "feeling", u will have someone to talk about it, which will make ur bond and love even stronger. Am sure if u call her everytime u got that feeling, she'll help u and then you'll get over it fast. Sorry for the long text😅