I completely agree about calling each other 'love.' As a Brit, I know that it is very rarely used to actually mean 'the one I love' by rather 'darling' or something less romantic and more friendy. Kind of like saying, 'you're right, mate' but is generally used to address females. It always irks me when Harry and Draco call each other love all over the place because, even in an established, well written, relationship, it's still unlikely that they'd call each other 'love'. Maybe it's just me being iffy and English but it really annoys me.