Ok, so, imagine a sitcom. You've just written a scene, you like it, you'd even go as far as to say it's sort of funny, however you then realise that somewhere along the line the two characters involved in it, sorta seemed to have swapped personalities. However if you swap the roles back round, it wouldn't be as funny, BUT obviously it would be more true to the characters, and probably give the second one a bit more spice.
I don't doubt that you're all gonna tell me that I have to be true to the characters blah blah blah but gosh darn it, I like this blooming scene as it is.
So if anyone out there wants to humour me and tell me it's fine to keep it as it is, please do...