English version

soul mate

From Longman Dictionary of Contemporary Englishsoul mateˈsoul mate noun [countable]  RELATIONSHIPsomeone you have a very close relationship with because you share or understand the same emotions and interests
Examples from the Corpus
soul mateIt will be easier to find a soul mate elsewhere than in one's own backyard.The film, Him, is a romantic comedy role about a woman's search for a soul mate.To Chrissie he is a friend, to Terry a revelatory lover, and to Melanie a soul mate.It wasn't the kind of reaction I'd expect from a man who had just killed his so-called soul mate.This man, much like his Southern soul mate at the other end of Pennsylvania Avenue, is a survivor.
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