Most Helpful Guy
I am not sure spirituality means what you think it means.
You have fallen in love with a man who is clearly not as much in love with you. He is rude with you and doesn't treat you well. You don't want to leave because you love him. Do you really expect it to change? It won't ! Unless you are ready to feel disatisfied for the rest of your life, you will have to go. May I suggest sooner than later? After all, how much time do you want to waste with him?
If it's about passion, then don't be surprised, passion doesn't last. It fizzles out. It's normal, all relationship does that. It needs work after that. If he does nothing for it, then he's letting his relationship rot until it disintegrates. You could always give him a warning, I am pretty sure nothing will change.