My head cracked opened

You're in my mind but out of sight
You fill my thoughts both day and night
Distance between us is but miles
Apart from you, life is a trial
I know it's hard for you as well
The test of time our love will tell
I know we're doing the right thing
A happier future the wait will bring
As these days go flying by
I'll be happy that I tried
Soon enough we'll be together
And life for us will be much better