The rime of the ancient marier

In this poem I think that the theme is about being careful about the choices that you make. If you're not careful then your choice can lead to bad things which can lead to more bad things. Which is like causing a chain reaction. This deals with romance because the spirit lady loves the bird. Well the bird loved the man, but the man was selfish. The man ends up shooting the bird/ which makes the spirit lady extremely upset and she puts a curse on him, for revenge.