Who is stopping your husband or wife from starting a new relationship in addition to yours? Sure there would be dating, common interests, doing stuff away from you for their pleasures, ****ing, amongst many other things before marriage is even a consideration unless it is for citizenship purposes? What if your husband or wife was under the impression before marriage that other marriages could have been openly pursued, sure then consent could then be legally argued. Do you need to enter it as a clause in your marital agreement?
I don’t care, I only care whether it is adults making adult decisions, but now that it may become a possibility within law married people may be willing to explore these options without ‘illegal’ scrutiny.
I have been married, done that, earned the t-shirt, burned the t-shirt.
Look there is a reality here, there are people with broken marriages where one person refuses to divorce and willing to challenge it legally. You know, I don't think that is fair, if a person wants out allow them to get out, so I can see how the new marriage act may give some comfort from being tied up to conservatism. There are a lot of mechanisms in law, but there are other question like how it will correlate with estates, family law and children's law matters. I do expect some legal cases to arise in the time to come.