Suggestions for matching tattoos?

My best friend and i met in first semester of Chinese major. She studies in Shanghai now, and i live in Germany. I'm gonna visit her soon and we are thinking of getting matching tattoos, and we are leaninh towards Chinese tattoos.

Do you have any ideas on what we could get?

Would it make sense to get something like 海内存知己，天涯若比邻 where she gets one half and me the other?

Opinions on 友情长久，分别短暂?

Thank you in advance!