Heart Broken Poem by someone something

Crying myself to sleep at night
Once again
Staring at the wall
Trying to figure out
When everything started to go wrong
Beginning to blame myself
Maybe I wasn't good enough
Maybe I did something wrong
Turns out he was in love
With my best friend all along
Story of my life
This is how my relationships end
Him in love with my friend
I was never good enough
And most likely, I never will be
Crying all the time
Watching my self-esteem
Plummet to rock bottom
And my heart begins to shatter
Knowing I don't matter
To you or anyone else
This is what happens
When you leave me
Heart broken