Too bad for me!

Hardly did I realize
The bridge of our relationship
Had been collapsing gradually
Until now that it is too late;
As you have left me already
For someone else.
It’s just now that I realize
A wall had been growing
Between us;
Had I known this,
I would have taken my measures.

Daily prompt: Realize
#daily-post, #daily-prompt, #poem, #realize