go Dutch

share the cost, each pay half the cost (especially of a date)

Going Dutch is a slang term that means that each person eating at a restaurant or paying admission for entertainment pays for himself or herself, rather than one person paying for everyone. It is also called Dutch date and Dutch Treat.
See more at Wikipedia.org...

Verb
1. share expenses equally and split the cost of something; "My boyfriend and I always go Dutch"
(hypernym) pay

two people each pay for themselves We always go Dutch when we go on a date.

idm. แบ่งกันคนละครึ่ง (คำไม่เป็นทางการ) slang. แบ่งกันจ่ายคนละครึ่ง