I'm looking for an oldies hit with the chorus "I've looked at love from both sides now, from give and take and still somehow, love's illusions I recall, I really don't know love at all
Paul Young also did a lovely haunting version of Both Sides Now with Clannad. It's on Paul's 'From Time to Time' CD, available on Amazon. (listening to it now, makes me go all goose-pimply!)
The song was actually written by Joni Mitchell and you'll find it on two of her albums "Clouds" and on "Both Sides Now". I understand her version also features on the Soundtrack CD for the film "Love Actually". It depends which version you remember or are looking for....good luck and hope you find it!