I know that my W and I were intended to meet and marry, but the free will that each of us can exercise in this lifetime, allows for us to make mistakes, get confused, or find healing. And there is no predestined end result.
LG, since you opened the philosophical door with your reference to reincarnation, let me just throw this out...
Google on "nondualism" and/or "advaita" and start reading. Read John Wheeler, "Sailor" Bob Adamson, Joan Tollifson, John Wren Lewis, Tony Parsons, Suzanne Segal, Metta Zetty for openers. You'll find links to others. Follow them.