Here is an examle of the lyrics from the great love song by Kenny Rogers titled I Can't Unlove You

Postcards an' letters an' pictures made to last forever,
To be boxed up and tossed away.
Nick-nacks an' souvenirs:
In an afternoon they're outta here:
They'll disappear without a trace,
But what they mean to me will never be replaced.

I can't unthink about you;
I can't unfeel your touch.
I can't unhear all the words, unsay all the things,
That used to mean so much.
I wish I could unremember,
Everything my heart's been through.
I'm finding out it's impossible to do.
Oh, it's no use: I can't unlove you.