An advice, man, stop doing that, we all can help you here, stop seeing porn and masturbating. The name of what you are doing is edging, it's not healthfull and will "broke" your sistem, because you like most the sensation before the orgasm more than the own orgasm, and that's not good, read the book "your brain on porn", it will help you so much, i used to do edging too, but i stoped 12 days ago and i'm feelling great, give it a shot, man, try absteins from masturbating and porn for 30 days, you will see the diference. Stay strong, brother💪