Want to have your Sims romantically connected to more than one Sim at a time? Then you're looking for polyamory or polygamy, which can happen in The Sims 4 under certain stipulations.
Free love can be achieved with and without mods with some creative tweaking in The Sims 4, but polygamy is a harder sell. Here's how to get both, whether you want to use mods or stay vanilla.
Is polygamy or polyamory possible in The Sims 4?
Polygamy is distinct from polyamory, as polygamy explicitly means more than two partners in a marriage. Polyamory is more than two partners involved in a relationship. More than two Sims being married in The Sims 4 without mods is not possible. There are ways to have more than two sims in a relationship, though (as long as you have the Eco Lifestyle pack). Thankfully, it is possible to find some ways around the polygamy problem with mods.
How to have polygamy in The Sims 4 with Mods
Can you use mods to have your Sims marry multiple people?
The most useful mod for polygamy or polyamory in The Sims 4 is Wonderful Whims. This mod includes not only relationship modifications but also the ability to tweak pregnancy, attractiveness, menstrual cycles, and much more. Specifically, it will allow your Sim to marry an already married Sim or do the same with a Sim in a relationship already.
To get the mod, follow the link for Wonderful Whims and select the Download button below the beating heart graphic. Take that folder from the download and unzip it. The files from that folder will need to be dragged to the Mods folder on your PC. From there, make sure you have script mods enabled on The Sims 4.
Related: Sims 4 – How to have more than 8 Sims in a household
How to have polyamory in The Sims 4
One of the main ways you can enable polyamorous relationships in The Sims 4 is through community voting with the Eco Lifestyle expansion. With this pack, you can vote for the Free Love initiative. If this gets passed, jealousy and the negative effects of having multiple partners are eliminated. This doesn't help marriage, but it's a start!
Another way to achieve this is to have all Sims in the relationship possess the Serial Romantic Aspiration. This will make it so that each Sim will have no jealousy problem, making them okay with the polyamorous setup.
Want to read more about relationships in The Sims 4? If so, check out How to speed up pregnancy & choose the baby’s gender in The Sims 4 on Pro Game Guides.