Lyric discussion by peaceattack 

Cover art for Sierra's Song lyrics by All-American Rejects, The

I feel like this song wants to be really romantic, but it has some lines that undercut that intended effect. The whole song gives the impression that the speaker is just saying whatever it takes to get this girl (Sierra) to sleep with him. For example, "I'll be the man you complete tonight" places emphasis on the immediate future, rather than on a lasting romance. It also suggests that she'll move on to other men after tonight. And the phrase "you belong to me" is always a bit creeptastic.

My Interpretation

I could disagree just a little bit. She completes him tonight and forever, I think.