I Have To Hold Back

I get scared that we won't make it
Worried we won't last
Maybe our futures non-existent
Because I can't forget about the past
I can't follow you blindly
And hang on your every word
I cant believe in us completely,
The idea's just absurd.
I can't give myself completely
I HAVE to hold back
I do it without knowing why,
It's just a blatant fact.