Broken strings - HS oneshot

Soulmates are two souls over the entire world, which are connected with a string. The string is defined as the strongest and most beautiful thing on earth, yet no one has ever seen those strings, while there are millions different ones. Nobody knows their soulmates, and some give up on finding them, but the string rarely breaks. Even if one of two finds other love, the string will keep the two soulmates together. Soulmates think and feel the same, but both of them lead an entirely different life. The only question that no one asked is, what if the string breaks? Will the soulmates become irreparably broken or do the strings make the soulmates more frailer, than they ever thought they would be?