Sexual history should not have a bearing on a current relationship or marriage unless a disease was passed onto you.
The majority of people getting married in the United States today have had pre-marital sex. Unless your spouse lied to you before the wedding their past was no secret.
Some men might even value the experience she's gained which allows her to please him in ways no virgin ever could.
The #1 cause for divorce is (selecting the wrong mate). In order to avoid this mistake it's important a person has done some serious introspective thinking to determine what they want, need, and desire in a mate. Ideally you want to select a mate who "naturally agrees" with you on the major things in life. Each of us chooses our own friends, lovers, and spouse. If you go to the store to purchase an apple but buy an onion instead...Whose fault is that? You are responsible for your own happiness. Hopefully with time and experience comes wisdom.