You seem to be incredibly intense when describing your feelings but for my other half he has been advised that if those intense feelings are consistent for 5 days then they are his true feelings but if they vary depending on other things such as having a positive response to something he has made or a disagreement with someone then his intensity is an emotional reaction to his situation.

If it is love you feel for this man, then maybe ask for advice on how to initiate a courtship which may lead to sexually intimacy that will be guilt free for both parties.

The suggestion of seducing an unwilling partner no matter what the situation has caused a reaction because seduction suggests a sexual motive which is not always connected to emotional well being. I myself have had multiple sexual partners but only been in love with one, I have however had strong friendship with one or two meaning I cared about their wellbeing and would have hated if our actions had hurt them.

If you feel for this man show him and learn to respect that despite your feelings about his choices you can allow him his beliefs. Because something doesn't make a sense to you it does not make it wrong. (He may have had sex before but has made a decision that he no longer believes that it is the correct thing for him make peace with his choice)