Every soulmate relationship is karmic, i.e., designed to further our lesson plans. Soulmates are not just romantic. They can be friends, siblings, parents, etc. As for my experience based opinions on the TF concept, if it pleases you to read, https://medium.com/know-thyself-heal-thyself/my-experiential-based-take-on-the-twin-flame-soulmate-concept-a8553dbf4d25