How come lyrics know me more than I do?

Have you ever been listening to a song and you just think 'wow! That is what I feel right now, but I didn't know how to put it!' These are some lyrics that make me do that, they may not be exactly what it said because I don't have the lyrics I'm just listening, so don't tell me I'm wrong. Some I will explain, some do it for me. Some will be about you, most won't, but don't speculate just listen.

Your on my heart just like a tattoo - you all mean so much to me, what would I do without you?
You think I don't feel like you do - seriously??? I am human!
So here's to everything coming down to nothing - how could it?
You feel so low you can't feel anything at all - why did I let you do this?
You think I'm pretty without any makeup on, you think I'm funny when I tell the punchline wrong, I know you get me so I'll let my walls come down, before I met you I was alright but things were kinda heavy, you brought me to life so every february you'll be my valentine
Do you hear me, I'm talking to you - I hope you will
I keep you in my heart, you make it easier when life gets hard
You gotta keep smiling through the thunder and lightning - how come I have to but you don't?
Boys will be boys, girls will be girls - its reality, get used to it!
Don't cry before your hurt - so why do you?
Your everything I need and more
I hate that I made you think that the trust we had was broken
I keep pretending that I don't care
Oh, so you think you know me now, have you forgotten how you make me feel when you drag my spirit down?
I don't know how to be something you miss
they say things are to good to be true, I just hope they ain't talking about, I know everything must come to an end, but I just can't imagen me without you
I love the way your everything I've ever wanted - you all are!

Love from me xxx