get along like a house on fire
To have a great relationship with someone quickly.
" I was worried when my boyfriend and father met for the first time. However, they got along like a house on fire because they both like watching football and playing poker."
A: Do you like your new roommate?
B: Yeah! We get along like a house on fire! We both like the same things and we are both clean people!
A: Do you like your new roommate?
B: Yeah! We get along like a house on fire! We both like the same things and we are both clean people!