Thirteen... 
Unlucky for some. 
Including me.
The woman I loved left me on the thirteenth. 
Thirteen months of living together and she walked out the door without looking back, straight into another man's arms. 
She was kind enough to leave something to remind me of her: thirteen thousand pounds worth of debt.
Thirteen; the day I lost my nuts. 
Well, I didn't lose them, cancer took them from me. Better to be a man without balls than one without life.
Still, thirteen sucked... until it didn't.
Until her.
Thirteen might just be my new lucky number.
*Thirteen is book #4 in the 'Love by Numbers' series. It is interconnected but can be read as a standalone.*