Study quoted below.
"..we find evidence that relatively high spending on the engagement ring is inversely associated with marriage duration among male respondents. Relatively high spending on the wedding is inversely associated with marriage duration among female respondents, and relatively low spending on the wedding is positively associated with duration among male and female respondents. Additionally, we find that having high wedding attendance and having a honeymoon (regardless of how much it cost) are generally positively associated with marriage duration."
papers.ssrn.com/sol3/papers.cfm?abstract_id=2501480