Contextual Analysis of "it must have been" in Lyrics

well

that let her down

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it must have been your love

i close my eyes

it must have been good but i lost it somehow

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but it's over now

i close my eyes and dream away

it must have been good but i lost it somehow

i been in the right place

i'd of said the right thing

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the lazy fire

start

the lazy fire

that wasn't me

i couldn't hear

that wasn't me

i couldn't hear

but can you feel this magic in the air?

fell in love when i saw you standing there