Comprehensive Chinese-English Dictionary

不分彼此 [bùfēnbǐcǐ]

1. 1. [Chinese idiom] make no distinction between one's own and somebody else's; share everything; be on very intimate terms

   如果你要用钱，我可以给你，我们姐妹俩还分什么彼此。

   If you need money, I'll give you some. You and I are sisters—what's the difference between yours and mine?

   他们感情很好，不分彼此。