I don't think 'fate' brings people together. Chemistry does. Or lust. Or a friendship that turns into something else. I don't think there's one and only one 'perfect' person for everyone. If I had never met TinCow, we'd both be involved with other people. It's unromantic but true.

I'm not well versed in the Bible, but I think that your friend is being naive if she thinks that God is going to cause her to cross paths with a man who is perfect for her. Passively waiting for the right man to come along is a recipe for being single.