The lyrics you are referring to are from the song "Breakeven" by The Script. The key lines include:

• "What am I supposed to do when the best part of me was always you?"
• "And what am I supposed to say when I'm all choked up and you're OK?"
• "I'm falling to pieces, yeah, I'm falling to pieces"
• "I'm still alive but I'm barely breathing, just prayed to a God that I don't believe in"
• "Cause I got time while she got freedom, cause when a heart breaks, no it don't break even"

These lyrics express the pain and imbalance felt after a breakup, where one person is still deeply hurt while the other has moved on