well lemme back up....

I currently cannot ejaculate during intercourse and discussed it with my psychiatrist who said it is common among men that repeated masturbation to certain stimuli (i.e. porn) will limit their ability to achieve that same desired release during intercourse

once again....I cannot say this of all men, just myself and the word of a psychiatric professional

I have read a case study on men who had similar problems after viewing pornography for many years...they could only ejaculate to certain types or certain actors...sort of like the old Pavlov's dogs theory....ring the bell they come to eat

I have done phone therapy with a counselor who specializes in sex therapy based out of Colorado...he has a client who could only ejaculate to a certain gay porn star and only while he was wearing cowboy boots...