“'Don't you ever wish you could make that bit go away?' I say, feeling angry at the past. 'That you could erase those painful memories, forget they ever happened, just remember the happy times you had together?'

'You must never say that,' he reprimands sternly.

'But why not?' I look at him in surprise.

'Because it's the bad memories that makes you appreciate the good ones. Don't ever wish them away. It's like your nan always used to say, "You need both the sun and the rain to make a rainbow".'”

(Don't You Forget About Me - Alexandra Potter)