For a majority of couples, committing to a long-term relationship or a marriage means a monogamous arrangement: just the two of them forever and ever. Other couples, however, take the approach of an open relationship, which can range from occasional permission to be intimate with someone else to having additional significant others in the picture. Among those who prefer monogamy, the idea of an open relationship might seem scandalous or even unhealthy, but there鈥檚 science to back up some surprising benefits of this type of arrangement.

A woman and man look at each other as a smiling friend looks on

A study published in March in the SAGE Journals found that because monogamy is considered the default type of romantic relationship, other studies on marriage have been biased against open relationships. Seeking to find the truth about how open relationships work and the impact this arrangement has on the people in them, the researchers found that, overall, some things work better in open relationships compared to monogamous relationships.

One major finding was that people in non-monogamous relationships tended to experience less jealousy than those who just have one partner. This might seem counter-intuitive at first: How could someone possibly feel less jealous knowing their spouse is dating someone else?

The study found a couple of reasons why jealousy isn鈥檛 as big of a factor for open couples. One is that they have permission to see other people, and that this mutual agreement mostly negates the motivation to feel jealous. And because of that mutual arrangement and understanding, open couples don鈥檛 feel the need to rifle through their partner鈥檚 text messages and email, looking for evidence of secrets and cheating.

This goes hand-in-hand with another significant difference between open and monogamous couples: trust. According to the new study, people in open relationships have far fewer trust issues with their partners than monogamous couples. This is largely due to the fact that there鈥檚 no expectation or demand for sexual or even emotional fidelity. Because it鈥檚 understood within non-monogamous relationships that a partner does and will be involved with other people in some way, open relationship partners don鈥檛 have to worry that their partner is 鈥渃heating;鈥 they know their partner is seeing other people and are okay with it.

Elizabeth, who is 35 and has been in an open relationship with her partner for around four years, tells us that the independence an open arrangement affords her has been a huge benefit. Being open 鈥渉as given me the chance to develop within the relationship, make my own choices, and really reflect on what I want,鈥 she tells us. She also says that she enjoys being able to use dating apps like Tinder freely, which makes her feel more connected to the outside culture.

But this isn鈥檛 to say that being in an open arrangement doesn鈥檛 come with some challenges. Elizabeth tells us that when her partner struggles with dating or she thinks he鈥檚 with the wrong person, it can be hard to be supportive and helpful.

And of course, all romantic and sexual relationships take work, so juggling multiple relationships at once can be extra hard 鈥 a difficulty unique to open arrangements. Elizabeth says that she and her partner have struggled in the past to make sure they鈥檙e paying the appropriate amount of attention and being empathetic to the needs of people they date outside of their relationship with one another.

This brings up a point that is lacking from the new study on open relationships: Things seem to work great for the core couple, but what about the 鈥渆xtra鈥 folks that get brought onboard? Because more than just the primary couple is involved, it鈥檚 also important to take a look at how other people in the relationship are impacted, and if they are enjoying the same benefits.

What the study reveals about open marriages doesn鈥檛 mean that there鈥檚 anything necessarily right or wrong with different relationship arrangements, but it does emphasize the validity of open relationships. Monogamy will work for some couples, while open relationships will be better for others, and it鈥檚 important to remember that while the latter isn鈥檛 as widely accepted, it can still be a good thing for the people who make it work.

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(Photos via Getty)