Are there other men around that you might consider as a future partner?

Your bf reported lack of sensation after reading "literature" that talks about men losing sensation. Most likely he was influenced by what he read. An old British classic, "Three men in a boat", describes a guy who starts feeling all kinds of dangerous symptoms after reading a medical textbook. The phenomenon is very, very old. People are impressionable. Also read about the nocebo effect if you are interested. That is the theory part, which basically says that your partner lacked or failed to apply his critical thinking skills when he read about the harmful effects ofvporn, even to the point of believing blatant nonsense about the years he would need to recover.

On a practical level, you just don't describe anything remotely resembling happiness together, and sex is just one small piece. You need to reread the OP several times to appreciate the amount of sadness, crushed hopes, and disappointment that you poured into your writing. Were the man caring, you would not be writing along these lines. Even if it were all true about porn, a caring man would present this to you in a different fashion, without eroding your self-esteem. So this nut is bad. There are plenty of others.