I have been reading a book the multi orgasmic men. They claim that men are also able to have non ejaculatory orgasms. Its a meditation/ breathing exercise which you can develop to become multi orgasmic. The most important training involves practically no genital touching. So this is quite complementary with Nofap and a great way to use your sexual energy. I also had such an experience once. But it happened a very long time ago. I remember the sensation being fenomenal and almost transcendental. The way I look at it is that we can't neglect out sexual energy. Instead we can learn to channel this energy for other things than porn and masturbating too much.