A same-sex relationship is a potential form of relationship in The Sims series. Players have been able to create same-sex relationships since the original game, but the way the game has treated these relationships has changed over time. Currently, there are two pre-made same-sex couples in The Sims series. However, several other Sims are implied to be gay or lesbian in their biographies. If they are allowed to act with free will, or if story progression is enabled, they may pursue a same-sex relationship autonomously.
In The Sims series, every Sim is technically bisexual, as he/she can be directed to have a crush on, fall in love with, engage in romantic interactions and WooHoo with a Sim of either gender, provided they are of the appropriate age group(s).
In The Sims 2, while editing a Sim in SimPE, a preference scale for males and females, can be found.[n 1] This was carried forward into The Sims 3, but is not as accessible. When first played, most Sims either have a completely neutral preference or a slight preference for (or rarely against) one gender. A Sim’s preference scores gradually change as he/she interacts romantically with other Sims during gameplay. Therefore, a Sim’s gender preference is fluid rather than fixed.
The Sims 2: Nightlife introduced a system for chemistry between two Sims, which is present in all later expansion and stuff packs for The Sims 2. While gender plays no intrinsic role in the chemistry between two Sims, it is possible to mildly influence a Sim’s gender preference by choosing facial hair (only available to males) or make-up (available to both sexes, but very rarely worn by male pre-mades) as a turn-on or turn-off.
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