Thousands of times to pray for Buddha. What do the lyrics mean?

"I am willing to exchange three fireworks for your eternal love" is the lyrics of the song "Reading Buddha for a Thousand Times". A copy with similar meaning is "I am willing to exchange three fireworks for your eternal confusion", which means: I am willing to exchange my beautiful life like fireworks for your lifelong infatuation.

There is a similar saying in Strange Tales from a Lonely Studio, which is said by a little fox who is infatuated with worldly scholars.

If my life can be regarded as a beautiful fireworks, I don't want to ask you too much. I want to use this fireworks three times. In exchange for your confusion once, in exchange for your lingering companionship in this life, as long as you indulge once, I will be satisfied.