He sees her as the only person he is destined to be with, and won't give her up.
Thoughts by SecretDance
No matter what you say, or what others say, you will still be mine. You will never leave me.
My opinion is that, there is a person, necessarily a guy in this song, and he loves a girl. He loves her so much, that he seems rather obsessed with her. He wants her to only stay with him, and him only. Only to be his. Also, I interpret him to be stalker-ish, obsessive and possessive over the girl.
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