Dedicated to Jason
If you get on like a house on fire, you might think that's a fiery, angry relationship but in fact, it's exactly the opposite.
This idiom means you get on really well with someone.
From the minute they met,, they got on like a house on fire!
Just in case they get on too well and do actually set the house on fire, here's a great video with text about being a fireman - or as they call them in the US, fire fighter.
