dreaming715,

Have you checked out Esther Perel?  She is a therapist, author,  She has a TED talk on The Secret to Desire in a Long-Term Relationship.  Start with that.  She has a best selling book, “Mating in Captivity: Unlocking Erotic Intelligence” which expands on her talk.

I wonder if your fiance is a considerate man in general.  Does he look to please you in other areas?  Or is he self centered outside the bedroom as well?  It sounds like he really does not care about you.

I am sure there are methods and ways to get him to pleasure you, e.g. have “only you pleasure night” which means that the sole point and focus of sex is getting you off and you do nothing, you only be the receiver and he is only the giver. When you say one of things you like about him is that he tries new things, it sounds like that it does not apply to sex  Even if you two take turns, I would think that approach won’t last long if he ever agrees to it.  If he is not really motivated in pleasing you, which is a manifestation of showing love for you then he won’t do that.

People show their love in different ways (check out the Five Languages of Love).   If he is really the loving, kind-hearted man that you say he is then he would do things that would please you rather than doing it reluctantly, as a chore.  He sounds like he is not really in tune with you (ex. he did not remember that time when you felt so happy).  That does not make him a “bad” person but I wonder if he is the right match for you, matching how you are and how you desire and how you want to be desired.

Mark