I am a 25 year old male. I haven't have sex till now, nor have I been in romantic relationship. Earlier, slightest explicit scene in a movie, or a slight physical contact with opposite sex used to give me full erection immediately. This is no longer the case. Now even watching pornography I get only a little erection and I have to physically rub my penis to full erection to masturbate. With romantic fantasies also, I get less than full erection, and have to touch my penis to make it fully excited.
But, on other hand, slight sadistic fantasy or remark still gives me full erection instantaneously. With only romantic thoughts I can masturbate lying down, but while standing I always require sadistic fantasies to masturbate. Will I be able to have normal sex life? I want to get rid of sadistic desires, so last few months I have been masturbating using romantic fantasies only(and I can do it lying down only)
This sounds much more like a mind thing than anything physical.
People's tastes change over time, and the same goes for pornography. What gets you off at one point may grow boring over time, and you'll find something else excites you. Body grows used to stimuli over time to, so you may find that what once works needs changing a little bit.
What you're describing means nothing about your future sex life. Too, remember that there is a big difference between desires and fantasies. Fantasies are just that; the person isn't necessarily planning on acting on them in real life. The only purpose they serve is to sexual arouse and excite. So having these fantasies isn't harmful.
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