The golden rule of fake dating someone? Don't fall for his sister.

After the year from hell, Haf is ready to blow off steam at a Christmas party. A no-strings-attached kiss with a stranger under the mistletoe is just what she needs.

But by the next day, rumours have spread. Everyone believes she and Christopher are madly in love and spending the festive season with his family in the English countryside. To save her new friend from embarrassment - and with no better plans of her own - Haf agrees to go along with the ruse.

Until she meets Kit: Christopher's mysterious, magnetic and utterly irresistible sister. She can't possibly fall for her fake boyfriend's sister this Christmas... can she?