I Loved Someone That Didn't Love Me

My bf left me a few days ago. He left me a note saying he couldn't stand me anymore. Changed his number. Moved homes. Blocked me on social media. I created another account on instgram and he's already got a new girl's heart to break. My best friend's. I'll be there to comfort her when he leaves her too.
I hope you're happy with yourself

Listening to this song:
https://m.youtube.com/watch?v=6QXTV_jPSl4