Soulmate

The original roots of the concept go back to a belief in reincarnation. A soulmate is someone that you have encountered in many different life times and have loved many times. That’s why the first time you meet them in this lifetime you feel as if you have known them forever before you even knew their name. There is a mystical deja vu energy right from the start.[1]
One theory of soulmates, presented by Aristophanes in Plato's Symposium, is that humans originally consisted of four arms, four legs, and a single head made of two faces, but Zeus feared their power and split them all in half, condemning them to spend their lives searching for the other half to complete them. Over countless reincarnations, each half seeks the other. When all karmic debt is purged, the two will fuse back together and return to the ultimate. [Wikipedia]
Each half is supposed to learn the life lessons at their own pace. When the two halves sometimes cross paths during various lifetimes, they have a cosmic powerful bond because they really are of the same soul. They complete each other. They are often very much alike, and the intensity of the connection is too much for a mere human with emotions and issues to handle, so they painfully end up parting ways. When they both finish their lessons, they are both reunited in heaven and come together as a beautiful representation of love and unity. This is also known as your twin flame.[1]
Loving a soulmate or twin flame is often difficult because we are not usually able to love and accept ourselves, so why would we be able to love the other half of our own soul? Soulmates can be deeply psychically connected with amazing love at first sight stories that end in magical happily ever after scenarios. Unfortunately, we are not usually evolved enough to handle something so intense as another person sharing our deepest soul level. Older souls that have many lifetimes of lessons and enlightenment under their belts have an easier time accepting such a deep connection with another person.[1]
From my readings, in recent times, the word soulmate has been used to describe a close companion or someone you get along well with. Either case, the true definition of the word lies in who and what you believe in.

My definition:
Our soulmate is someone who shares our deepest longing, our sense of direction. When we're two and together our direction is up, chances are we've found the right person. Our soulmate is the one who makes life come to life.


Source [1]: Full Article