Does the expression 'one sided love' exist?

[Daemon99]

If a guy loves a girl but the girl doesn't love him back, can we say it's one sided love? Is there a better expression for this?
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Non-native speaker of English
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I intend to live forever - so far, so good.

[Anna.ha]

I should think love comes from either of the sides can be called one-way love :-, which I have already seen somewhere on the internet. I am not certain if one sided love has the same meaning with mine though it looks gramatically right.

Does it make sense if I say one way love? Does it mean the same? Please comment.

[Mister Micawber]

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Unrequited love.
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Native English teacher at Mister Micawber's

[Daemon99]

Thanks Mister Micawber!

Is one-sided love OK? Does the expression exist?
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Non-native speaker of English
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I intend to live forever - so far, so good.

[Mister Micawber]

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Not as an idiom. I understand what you mean, though.
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Native English teacher at Mister Micawber's