An open marriage which is a marriage in which both partners agree that each may have extramarital affairs without this being regarded as infidelity.
For me, it is better to remain single than get involved in such a marriage. Marriage is sacred; it is a union and legal contract between two individuals that legally, economically, and emotionally unite their lives. A marriage is a covenant between a man, a woman, and God. The commitment to marriage is much more than sexual fidelity. To be there for each other for better and for worse, to have someone to comfort you when you are sad, someone to celebrate with when you are happy, and someone to share your burden with.
Although everyone has the right to live their life the way they want, there are people out there who subscribe to open marriage. They believe polyamory is the perfect solution because a type of controlled and equal infidelity is now permitted. I do not believe a polyamory lifestyle is emotionally and physically healthy and it is not something I would ever advise someone to be interested in. I'm not bashing your choices but why make the commitment and get married if you both agree to sleep with other people?
I do not agree and can never accept such a marriage. What is the essence of getting married in the first place? Since you can't be committed to someone, and you still want your privacy to behave as you like? Some individuals highly value and intentionally seek out opportunities to explore different aspects of their sexuality and to experience different connections with others while still maintaining a primary partnership. Freedom for both parties to behave as they like, you can go out and come back at will without being questioned.
However, as human beings they are, they might get fed up at some point with each other. The vast majority of these open marriages do not last for the long term.
I invite @nsijoro, @okere-blessing and @wuddi