Polly:
Really heartfelt lyrics here, this should defintely work with a proper melody. Just a couple of small nits that jumped out at me. In V1, line 4, I'm wondering why you used "she moved in your heart" instead of "she moved into your heart". In V4, line 2, I would have phrased it "nothings left between us and I won't trust you again". It's this jerk in specific that won't be trusted, and I would hope you eventually find someone who is worth trusting.
Can't wait to hear the song!
Ott (AKA "The Troll")