Relating Sims in separate homes poses hurdles. Marriage and adoption are restricted to household members. To bypass this, utilize the “Move In” function to merge households temporarily. Once Sims are related, use the “Move Out” option to separate them while maintaining their bond.

To establish relationships without merging households, consider using the “Set Relationship” cheat. Type “testingcheats true” in the console, followed by “relationships.create_relationship [Sim 1’s name] [Sim 2’s name] romantic_partner” (or another desired relationship type). This instantly connects Sims without requiring cohabitation.