get along like a house on fire

become good friends very quickly and have a lot to talk to each other about:
خیلی سریع با هم دوست شدن و ارتباط برقرار کردن

گرم گرفتن با کسی
Get on/Get along

میبینم با همسایه ت گرم گرفتی !
I see you're getting on like a house on fire with your neighbor