You're free to try, but you should know that the formula you have described has statistically been shown to be one of failure. Many would disagree right off with your premise that having 20-50 "consensual affairs" is moral. Even that you used the term "affairs" to describe this should be a clue.
Also, there have been many studies that have shown that, contrary to conventional "wisdom", people who live together before marriage are more likely to divorce (not less) than those who do not. Not only is this bad for the couple involved, but what it does to any children that are the product of this marriage is horrible.
But, it's a free country, so knock yourself out.
Or knock yourself up as the case maybe.