People on TikTok are obsessed with theories that delve deep into our romantic relationships, and one of the most popular is the ‘Invisible String’. The theory stems from Chinese mythology and says we’re all connected to our soulmates in crazy ways – you just might not know it yet. What is the ‘Invisible String Theory’?The theory uses a piece of invisible string as an analogy to explain how the universe connects people who are destined to meet. It says two lovers are bound together using a piece of invisible string which can stretch anywhere across the world. Those people are brought together a…