The song's chorus suggests that Kesha is aware that her relationship is destructive, but she is unable to resist the allure of her partner. She sings, "I know that I should run, but I can't/I'm addicted to your love, it's like a drug." This reflects the addictive nature of unhealthy relationships, in which one person feels trapped and unable to break free.
The verses of the song provide more details about Kesha's experience in this relationship. She describes her partner as a "monster" and a "devil," and she admits that he "tears me apart." Despite this, she is still drawn to him and cannot seem to let him go.
Ultimately, "Cannibal" is a cautionary tale about the dangers of unhealthy relationships. It warns of the risks of becoming too consumed by one's partner and losing oneself in the process. The song's message is that it is important to be aware of one's own needs and boundaries, and to seek help if one feels trapped in a destructive relationship.