Hey!, I think I know that, it's the red thread of fate, is it?, man, i love that proverb, it's supposed to be a red thread that connects those who are destined to meet regardless of time, place or circumstance. the thread may stretch or tangle, but it will never break <3, so cute ^_^
Every one has an invisible thread attached to them. At the other end of your thread it is attached to someone else. That someone else is meant for you. It may not be easy but you just have to find the other end.