当小三只怪我魅力大
[dāng xiăo sān zhĭ guài wŏ mèi lì dà]
The name 'If I became a mistress, it’s only because of my irresistible charm' expresses a rather controversial viewpoint, using an exaggerated manner to depict one's charm, and implies the speaker has no regret for becoming a mistress, which is morally questionable.