Why does someone need to be your predestined match in order to be romantic?
And who's to say that a person you're "destined" to be with is someone you will necesarily love or care about. What if you're destined to be with a child molestor, a sadist, or a total idiot?
Destiny is not always a kind mistress.
In the past, we married who our parents chose for us. We had no choice in the matter. What on earth would make you think that having to be with whoever fate, destiny, or even God chose for us is any better?
Life is interactive... we have fought for the longest time in order to be able to choose the way we live our lives, who we love, what careers we pursue, what religious paths we follow, etc. How is the notion of not having those choices more romantic than the idea of choosing a mate for yourself out of the sheer desire to care deeply for another human being, admiration for their personality, or even just a fascination with their backside?
Reguardless of whether or not predestination exists, it's impossible for us to be completely conscious of it. People choose to believe that whoever they care about at the time being is their "soul mate", then, when it falls apart, blame it on "fate" and go off searching for "the one"... someone who will always be their perfect match, their other half, someone who can fix everything and will never hurt them.
The problem is: that person doesn't exist.
The "soul mate" idea is a lovely one... but it's also a lazy one. And to be honest, the notion that someone is just going to come along, love you and make your life perfect forever is sort of boring compared to the prospect of going out creating solid relationships through patience, hard work and hard times knowing full well that you're are together because you want to be.