It's a Duke's life: Sequel to 'Don't flatter yourself' - A P&P Variation

Any man in possession of a title must be in want of a wife.
That is what every matchmaker thought about Alistair, even before he became the Duke of Denton.
He spent years avoiding compromising situations and unwanted marriages, often with the help of his identical twin brother Robert.
Then he met Charlotte Lucas, best friend of his newly married cousin, Lady Elizabeth Darcy.
Charlotte Lucas is a reluctant spinster.
But is she reluctant to be a spinster or is she reluctant to be a duchess?
There is only one way to find out...
Sequel to 'Don't flatter yourself' - A Pride & Prejudice Variation