Meaning of "Boomerang" by Hooverphonic

The lyrics of "Boomerang" seem to encapsulate a toxic relationship dynamic where one person continuously hurts the other but always comes back, just like a boomerang. The imagery of playing with fire and reinventing the word "free" when the person is gone suggests a sense of danger and liberation in the relationship. The person described appears to be struggling with their own insecurities about aging and their inability to accept it, leading them to lash out and serve hurt to others. This song paints a picture of a tumultuous relationship with themes of hurt, desire, and a cycle of returning pain.