When two couples agree to engage in a sister swap, they typically establish boundaries and guidelines beforehand. These may include rules about safe sex practices, communication protocols, and expectations for the duration of the swap.

It's essential to note that every couple's motivations and circumstances are unique. While some may approach sister swaps with a sense of adventure and excitement, others may be driven by a desire to address underlying relationship issues or insecurities.

If you're considering a sister swap or have questions about this topic, I encourage you to seek out reputable resources and support. Remember that every relationship is unique, and what works for one couple may not work for another.