I’m late to this, but hope I can make a useful contribution.

I don’t know your history with this man but, from what I’ve read above, this is a man who has been careless of your feelings on more than one occasion. Noticing another woman’s beauty is one thing, deliberately pointing it out to his girlfriend is quite another. Now, he has written a ‘novel’ that includes pornographic passages. He can describe, in detail, the body of a woman he slept with six years ago? Then the encounter is not history, it is still very fresh in his mind. And he not only writes about her (and others), but expects his girlfriend to read what he’s written? I doubt it is coincidence that the two parts he let you read both involved descriptions of the bodies of other women and/or his having sex with them. Good grief, this man is goading you, deliberately making your jealous and deliberately hurting your feelings.

There is a strong possibility that your boyfriend is a narcissist. This kind of behaviour is quite common among narcissistic people. Please do some internet searching if this term is not familiar to you.

I strongly recommend that you at least consider ending your relationship with this man. It sounds to me like he is emotionally abusing you and enjoying it.

all the best

Jan