Is it really me meaning?

expression used to describe metaphorically a period of ignorance and spiritual crisis that precedes the communion with Divinity ; 2. in a larger meaning, it is used when refering to having a hard time, going through a phase of pessimism, sadness, failure etc.

What does you really get me mean?

You get me and I get you are both used to express understanding. You get me means "You understand what I'm saying," and I get you means "I understand what you are saying." I got you (and, more informally, Got you) can also be used to express understanding, but it is not as common as I get you.