It is very clear, if couples get to know each other according to God’s way/will, they would never divorce. And as I said, divorce means that the couples weren’t meant to be together in the first place. And it makes sense to question how they met.
This is not clear to me at all. I would think that people get divorced not because they married the wrong person, but because they have not formed themselves (or allowed God to form them) to be able to love sacrificially, fully, fruitfully, freely, and faithfully. More simply, they don’t know how to be a husband or wife.
Generally, Kelvinf, I agree with what I think you are implying: That a man should go through life following God’s will for him, pursuing interests, vocation (what it is, not who it is), education, career, friendship, etc. And this lifelong process will seem somewhat organic. And while doing the things he ought to do, he will become the man God has made him to be (otherwise, he oughtn’t have done them). In this natural progression of pursuits, he will meet many people, presumably half of them of the opposite sex. It is from these coincidental, or naturally-forming, relationships that he will meet someone to marry.
It seems to me that there is some plateau of formation and understanding of Catholic marriage (full of chosen love and self-sacrifice for the sake of the beloved) that only a fraction of the human race has climbed, but any of the men on this plateau could successfully marry any of the women on this plateau. By successfully, I mean not divorce, and lead each other and their children to heaven.
Part of a man’s natural process of living his life and pursuing God’s will would include putting himself in a postition to be formed/readied for a holy marriage, as well as putting himself in postition to find a spouse who is likewise formed. I think it is possible that for a time in his life, God’s purpose for a man would be specifically to search for a spouse, but I don’t think it’s the norm to live by until you’re married. Following God wherever He takes you will bring you to where you’re supposed to be.
Coming from me, though, all of this is theoretical, as I am unmarried, and am close friends or relatives with almost zero divorced people.
As an attempt to answer the original question, kelvinf: it depends.

Seeking, searching, even hunting for a spouse doesn’t *seem *immoral to me (not the test for morality, I know) but it doesn’t seem like a good idea either. One could easily get caught up in the pursuit, turning it into false God.