Fighter

The speaker addresses someone who betrayed and hurt them. At first, they describe shock and disappointment: they believed this person was loyal, but discovered lies, cheating, and selfishness. Over time, their feelings shift from injury toward confidence. They do not say the betrayal was acceptable; instead, they claim they have become stronger and are ready to move on without being controlled by the past.

“Made me a fighter” is a metaphor: the painful experience taught the speaker to stand up for themselves. “My skin a little bit thicker” means they have become more emotionally resilient, less easily wounded by criticism or hardship. The image of the other person’s “joyride” ending “in flames” suggests a reckless, selfish plan ending badly. “You dug your own grave” is an idiom meaning that the person’s own choices caused their downfall.

The repeated thanks are deliberately complicated. They may sound like gratitude, but they also carry anger and defiance: the speaker is turning harm into a source of strength, not forgiving or excusing the person. The lyrics present this as an empowering story, though the repeated insistence on remembering suggests the hurt has not simply disappeared. Moving forward here means refusing to return to the relationship, even while its effects remain.