What I am too afraid to accept

I know I'm human by the way my stomach drops
     The way it drops because I look up & you're still there
By the way I cried just yesterday
How I had a heart to heart with someone I've only known for 2 weeks
2 weeks and he already understood me
I know I'm something more than just a machine by the way I get "butterflies"
How I have a different output for every input
Because I need to advance to survive
I know I am human
Because I can succeed beyond what you think of me