The song is about loving someone deeply that whenever you are with that person, everything seems to be complete.
There's no fear in your heart, just pure happiness.
And you hold that person in you're heart, so that no matter what happens that person will always be with you. And the love that you've shared will remain for as long as you live...
It will never die in your heart therefore it is safe no matter what the circumstances are. That's true love!
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