Hey there Berlin,
Just read this thread, thanks for the info, Im single and have been for quite a long time now, and its been a great relief knowing that POIS is less severe with actual sex than masturbation, I've been telling myself I should avoid all relationships if it causes so much problems, your advice about selecting an introvert partner was interesting too, I do seem to be more attracted towards more 'reserved' women so it was nice to read it. I've only had casual sex a handful of times the past couple of years so never had enough experience to realise which is worse, so it was great to read your experience.
Also, are you still avoiding PUFAs? I was also eating a lot of KFC and have been eating more home-cooked foods recently and noticed a better overall feeling, but I can't tell if its entirely the diet as I have been trying my best to abstain as much as possible.