What happened to me?

I found someone that cares 
I found someone that listens
I found someone for me
I found someone just like me

I thought that I loved him
I thought that he would be the one
I thought that I could actually be with someone
I thought that I could love again

It was great the first couple of days
It was great until he just became a faze
It was great when I told him how I felt 
It was great until I realized he was just like an old belt

I know that I should be more generous
I know that I should actually care
I know that if I were him I would be unaware
I know that I would be heart broken

When did I become so cold
When did my heart start to turn black
When did I start acting like I was three years old
When did I start to let my relationships crack

What happened to me in the last couple months
What happened to me that I just don't care
What happened to me and my old self
What happened to me, why am I just like everyone else