I've got your number: Sophie Kinsella

I`ve lost it :(
The only thing in the world I wasn`t supposed to lose. My engagement ring. It`s been in Magnus`s family for three generations. And now, the very same day his parents are coming, I`ve lost it. The very same day. Do not hyperventilate, Poppy.
Stay positive!! :)
A couple of glasses of bubbly with the girls and Poppy`s life has gone into meltdown. Not only has she lost her engagement ring, but in the panic that followed, she`s lost her phone too. When she spots an abandoned phone in a bin it seems it was meant to be . . . Finders Keepers!
Except the phone`s owner, elusive businessman Sam Roxton, doesn`t agree. He wants his phone back, and doesn`t appreciate Poppy reading all his messages and wading into his personal life. Can things get any more tangled?