The LGBTQIA+ Mod is one of the best Sims 4 mods for realistic relationships as it adds diversity and fluidity to romance in the EA base game. Instead of your Sim’s CAS gender defining who they are, you can choose and assign various identities. This includes non-binary, gender fluid, transgender, and cis-gender. This mod adds unique orientations, gender identities, and experiences, making the game more realistic and representative of real-world diversity. One of the main features of this mod is the coming out system that allows Sims to come out to their family and friends. The families and friends have the option to accept or reject them. This mod is compatible with numerous mods from the modding community, such as Wonderful Whims and Lumpinou’s Relationship & Pregnancy Overhaul Mod.