You know when you read a light romantic novel (aka chick lit), and the heroine is about to get married to Bloke A (husband material but dull) when she meets Bloke B (rugged and manly), and you just know that she has to break up with Bloke A because she is meant to be with Bloke B.
Bloke A usually has a wet name like Neville or Nigel and Bloke B has a strong name like Finn or Hamish.