How to use "darling" in a sentence

"Sylvia, darling?"

I'm sorry, darling

'What is it, darling?' I said

'Pour me a cup of tea, darling,' he said to me

'I'm very sorry, darling,' I said

'I know you can't, darling

You're happy too, darling, aren't you?'

'It's too late, my darling, too late,' he said

'And how is my darling today?'

But what is it, my darling?'

'My darling, you are too wise

'My darling!' she whispered