While others may maintain that only one soulmate exists for every individual on this planet, I contend that there's more than one person in the world with whom we can have a fruitful relationship/marriage.
Otherwise, no one would ever remarry in the event that their first marriage goes awry.
To assert that the person you're with is the only person you can achieve a deep physical, mental, and spiritual connection with -- and that no one else could fill those shoes -- is, in my view, very naive.
What if you'd been born at a different time or in a different place? What if you had met someone a year before you came across your partner? What if you had opted not to go to that college, party, coffee shop, or other venue where you and your significant other first locked eyes?
Exactly. You could very well be with someone else right now. Context and happenstance matter.
I'm not saying that we can hook up with just about anyone. There are probably a good 20 to 30 people in the world -- mind you, that's only a guesstimate-- who we'd have a lot of chemistry with. After all, it isn't easy to find people who possess everything (or nearly so) we seek in a partner -- from physical characteristics to personality traits -- and vice-versa.
You can only find so many men and women who share your interests and views AND strike your fancy physically. And let's not forget -- they have to feel the same way about you. Even when all those conditions are met, it's no guarantee that a relationship will crystallize, let alone endure for the long haul.
If you're putting loads of pressure on yourself to find that "one and only" soulmate, take comfort in the fact that there are more promising fish in the sea than we may realize. Don't give up! True love awaits, and it's bound to come knocking on your door when least expected.