I feel so alone

Can you explain to me
What did we become
Where did we go wrong
Is it our fault?
Or Is it only mine

I saw you think
And I wonder
Do you think of me?
Because I have something to commit
I think about you day and night

In the day when I see you
I cant say goodbye
And in the night when youre not around
Ill cry myself to sleep
But I cant sleep cause I miss you