Who hasn't spent a Merlot-fuelled night with the girls analysing the exact tone of voice he used when he last called (three weeks ago), coming to the brilliant conclusion that the said boy is totally in love with you but probably shy, and - this is my favourite - intimidated by you? Therefore, it would be best if you texted him. Right now. At two am. Repeatedly.

He's Just Not That Into You: The No-Excuses Truth to Understanding Guys, by former Sex And The City writers Greg Behredt and Liz Tuccillo aims to blow this logic out of water. "He's just not that into you if... he's not asking you out, he's having sex with someone else or he only wants to see you when he's drunk" may not seem like rocket science for some, but for certain, non-supermodel sections of the female population, this constitutes a burgeoning relationship.

But buyers beware. The book's advice will mean the end of those casual flings with perfect abs who never call, but are still utterly worth it.

And, ladies - for the record - the text "Cat got your tongue?", while brilliant, won't make him call. Even if you send it six times.

He's Just Not That Into You: The No-Excuses Truth to Understanding Guys - Out on hardcover now
£28.44 from Amazon

EC