but is this real?

I remember everything about it, every feeling. Every single little detail, from the kind of gum in mouth to the giddy feeling in the pit of my stomach to the smell of the night air. But did it really happen? I remember what I did and I remember what I said, but was it really me doing it? Sometimes it feels like certain things I've experienced were just a vivid dream. It's like watching a movie or reading a book and feeling vaguely connected to the main character and knowing what they're thinking and doing but never truly knowing how they're feeling. Sure you can write a feeling down or try to portray it in a movie, but you never know how it actually is until it happens to you and sometimes not even then. What if it didn't happen? What if it really was a dream or some figment of my imagination? What if all of my personal memories aren't really memories at all? What if they're all just a jumbled mess of things I've read in books and watched on movies?