I've heard this a few times, though I can't pinpoint where. But this one TRP post has got me thinking about one example of what this phrase could mean to a man:

They want that same feeling, the ability to be vulnerable to someone. It's no longer socially acceptable to go crying to mommy, so they seek some level of that out from their significant other. They need that unconditional acceptance for who they are.

And he comes to the conclusion of this:

Lessons learned:

The idea that people will love you for who you are is true. But if you're not getting loved, it's not the concept that's wrong, it's that you don't deserve love. Except for mom, who is the only person you have a shot at getting unconditional love from.

Would you be fine with a woman loving you for how you make her feel, your status, money, whatever it is?

What is "you"? Like what part of yourself do you want to be appreciated exactly?

Have you ever felt that you were loved for being you?