its a legend in Japan that when you were born you have a red string on your pinky tangled. The other side of the string is the person destined for you. And the string will find a way for you to see each other. Even your on the other side of the world.

never heard of it before

I have heard this as a child.
But was taught it as, romantic folklore.
I don't believe in a 'soulmate', by any standards. Nor do I believe in' fate' or 'destiny'.
IMO...
Humans have and make choices.
Including who or what they love.

The Red String of Fate

(simplified Chinese: 姻缘红线; traditional Chinese: 姻緣紅線;

pinyin: Yīnyuán hóngxiàn), also referred to as the Red String of Marriage, and other variants, is an East Asian belief originating from Chinese legend. According to this myth, the gods tie an invisible red cord around the ankles of those that are destined to meet one another in a certain situation or help each other in a certain way. Often, in Japanese culture, it is thought to be tied around the little finger. According to Chinese legend, the deity in charge of "the red thread" is believed to be Yuè Xià Lǎorén (月下老人), often abbreviated to Yuè Lǎo (月老), the old lunar matchmaker god, who is in charge of marriages.

The two people connected by the red thread are destined lovers, regardless of place, time, or circumstances. This magical cord may stretch or tangle, but never break. This myth is similar to the Western concept of soulmate or a destined flame.

http://en.m.wikipedia.org/wiki/Red_string_of_fate/

So then were you born with a red string on your pinky?

A red string on Pinky? Isn't that mouse confused enough?

Yes I believe in that principle, but not the story with the red string and the Chinese god.