It’s probably better to marry a man who has not been very promiscuous. Past behavior does predict future behavior.
But there’s no in depth study done on men’s promiscuity and marriage success as there has been with women, so we don’t really know.
A politically incorrect truth that we tend to shy away from is that women really like promiscuous men, they find them quite irresistible. Good luck convincing women to choose more virtuous men! Whereas men have a natural revulsion to promiscuous women; this why every language has derogatory word for slut.