How Do You Keep The Music Playing?

How do you keep the music playing?
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 How do you make it last?
 How do you keep the song from fading
 too fast?
 How do you lose yourself to someone
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 and never lose your way?
 How do you not run out of new things
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 to say?
 And since you know we're always changing
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 How can it be the same?
 And tell me how year after year
 You're sure your heart won't fall apart
 Each time you hear his name?
 I know the way I feel for you is now or never
 The more I love, the more that I'm afraid
 That in your eyes I may not see forever, forever
 If we can be the best of lovers
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 Yet be the best of friends
 If we can try with every day to make it better as it grows
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 With any luck than I suppose
 The music never ends