From Longman Dictionary of Contemporary Englishgo halves (on something)go halves (on something)SHAREto share something, especially the cost of something, equally between two people Do you want to go halves on a pizza? → half
Examples from the Corpus
go halves (on something)• He generously agrees to go halves on you.• She'd promised to go halves with him if he got anywhere in his negotiations.• Do you want to go halves on a pizza? 