Are we talking about finding it difficult to agree on what colour to paint the bedroom walls, or which suite of furniture to buy? A tiff over how an egg should be cooked?

Or are you speaking of major differences to do with politics, religion or whether to start a family and those type of emotive subjects.

Cos if it's just about where to put the living room chair, or who sets the alarm clock for what time,  then I think that's normal sort of squabbling when you live with ANYONE!

The very word ARGUE sounds harsh in itself.   A 'tiff' or 'hissy fit' is something else! lol