simplesally said it well:
People should never convert FOR someone else...we should make changes for ourselves.
It's a life changing commotment you are thinking of making, and one where you would not be the centre of her universe, even if she is at yours. Many people make these sort of changes for other people, and it seems good for a while. But when the realisation sets in of everything that you have to change, you start to resent the person that you made changes for.
If you're not everything to her now, I'm sorry to say that you never will be!!
Just my opinion, for what it counts....
Bull!