https://www.psychologytoday.com/intl/blog/the-new-resilience/201606/do-women-more-premarital-partners-get-divorced-less

It seems that the golden middle is between [3; 9]

2 is asociated with higher divorce rates and also more than 10.

afaik there is no studies about this in males and is hard to tell if this will hold with different social norms like what we have nowadays 🤔