Does the expression 'one sided love' exist?

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?

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.

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Unrequited love.
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Thanks Mister Micawber!

Is one-sided love OK? Does the expression exist?

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Not as an idiom. I understand what you mean, though.
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