Let me bring this back again. I found
this reference which says that long term abstinence can actually be harmful, or at least painful, because of the fluids that built up in the prostate (this one again).
This agrees with my experience. I had to stop for some reasons any activity (even masturbation) for a whopping 7 or 8 weeks time span. No wet dream in the meantime (and never had one, even when I was a teen), but some erotic dreams gave me a good deal of arousal without consummation. I ended up with a painful situation, as described in the book, mimicking prostatitis. The antibiotic my doctor prescribed me was of little help, I suppose it kept the symptoms low. Reverting to a more regular ejaculation pattern relieved the sufferance.
You don't wish to know what was the feeling in the first ejaculation after all that time.