Marriage isn’t something to be taken lightly, however these days you can just get an annulment. If not a civil one, which are apparently difficult, at least a religious one so that you can remarry.
Annulment is more quaint than divorce. The concept of annulment is an old-fashioned one adopted by state legislatures many years ago at the behest of certain religions which publicly opposed divorce, but privately recognized that certain marriages were simply not meant to be.
Amusingly enough, if you’re a member of the Catholic faith (yes this is a blanket statement), you can get your marriage annulled so you can remarry. So for religion that does not believe in divorce, you’ve never actually been married. Once again, another pointless rule, with a silly rule that gets around it. Ah, religion.
These are the grounds for civil annulments. Within the Roman Catholic Church, a couple may obtain a religious annulment after obtaining a civil divorce, so that one or both people may remarry, within the church or anywhere else, and have the second union recognized by the church.
Much of this information has come from Nolo.