As a metaphor, what does this "dive" mean?

Native speaker’s answer
Rebecca
To "dive deep" means to examine something in great detail. However, in the context of this song, "dived too deep" means that one fell (dove) too deeply emotionally, and became too emotionally involved with someone. Ex: Let's do a deep dive into this new lesson. Ex: I dived too deep too quickly, and I got burned emotionally.