SuperStu, that is exactly how I see the situation for most male & female friendships.  I reckon it's normally the bloke who would like to be more than just friends but my view may be coloured by my experience  
 
  
True story. 
  
If a bloke is nice to a girl, she probably reflex thinks, decent bloke. 
If a girl is nice to a bloke, he reflex thinks, I could well be in here. 
  
We're just wired differently. 
 
  
That's exactly what I think.  I am still in shock due to something that my best (male) friend said to me today, hence the discussion up at the stables