What does "it" refer to here? Is "it" necessary here? Can I just say "anything we want to" instead?
"It" here is referring to their love. I would say that in this situation it is necessary. This is a dramatic scene so "it" is emphasizing that it is "their love" that has the power and not them separately. Removing "it" and simply saying "anything we want to" removes the emphasis on their love.
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