Wiktionary
kindred soul
n. (context idiomatic English) Someone with the same feelings or attitudes as oneself; kindred spirit.
Usage examples of "kindred soul".
She turned abruptly to her kindred soul, who stood listening with a mien of wonder and dismay.
Eric hadn't expected him to put it quite so bluntly, though after the first few notes he'd been pretty sure that Hosea knew his own gift, and recognized Eric for a kindred soul.
If only Savil would be there, he'd have one kindred soul in the lions' den!
The cyclops' eye took on the gleam of delight that comes from recognizing a kindred soul--and, just possibly, a good conversation.
She had found in him a kindred soul, another part of her being, and she had given herself into his care completely.