Mate, you're not STILL on about this, are you?!
We've already established — multiple times in more than one thread — that you don't feel you truly love this girl and the only reason you keep clinging to her (and would even keep her in an unhappy marriage) is because you find it too horrifying and traumatising to think of her with someone else. You've said that straight out. That's not love — and it's not going to turn into love, either. That is self-obsessed, sick-headed jealousy. You do NOT want that in a marriage.
You toss aside every suggestion about looking for things like mutual compatibility and love in a marriage on the grounds that they're "fundamentally self-oriented", when your underlying basis for wanting to marry this woman is that you can't stand the thought of her marrying someone else? "
Fundamentally self-oriented"... helloooooo??
And don't keep dismissing the very sensible arguments of people who have actually
been married (unlike you and me) on the grounds that they're "not biblical". That's garbage. It's bore obvious code for "I don't like what you're saying so I'm not going to listen to it."
If this question of marriage keeps on and on coming to you, you really might do better to discuss it — privately and in full honesty — with an experienced Christian marriage counsellor, rather than poking about on the internet trying to find enough people who are willing to tell you what you want to hear right now.
I'm sure you'll find your peace about this one day, brother, but I hope to goodness you don't seriously mess up this young woman's life — and your own — in the meantime.