You can have multiple soulmates, but only one twin flame because of how souls divide. For split soul twins (the most common type), one soul literally splits into two pieces. You can’t split something into more than two halves - the math just doesn’t math. Each piece is exactly 50% of the original whole.
There are actually three types of twin flames, though. Monadic twins come from one monad that creates two souls at birth - still one division creating two beings. Starseed twins have that group consciousness thing happening from non-human incarnations. But all three types involve singular division events.
Your soul family is much larger. The Oversoul contains 144 individuals total in most teachings - 12 branches with 6 sets of twin souls each. Your twin flame is one pair out of those 6 sets in your branch. The other 143 souls in your Monad become potential soulmates who share similar energetic signatures but maintain separate soul architectures.
Soulmates feel like coming home because they’re supposed to. Twins feel like a crisis because perfect mirroring shows you everything you’ve buried. Both connections are valid, they’re just operating at different frequencies for different purposes.