In an unmodded game, if any of the following conditions is true for Sim A and Sim A does not have the Unflirty trait, then Sim A is allowed to initiate autonomous romantic socials towards Sim B: – If the social context is Suggestive, Amorous or Steamy. – If Sim A is married/engaged/boyfriend-girlfriend with Sim B. – If Sim A has had their First Kiss with Sim B. – If Sim A and Sim B have done Woohoo. – If Sim A and Sim B were ever in a committed relationship, but broke Up/divorced. – If Sim A is in the Flirty mood. – If Sim A’s romance bar towards Sim B is 10 or higher. If Sim A has the Unflirty trait, then an additional test is done. Sim A still needs to pass at least one of the checks above to be allowed to take the second test, though. Here is the additional test for Unflirty sims: – If Sim B happens to be Sim A’s committed partner, then the Success Score needs to be at least 12. – If Sim B is not Sim A’s committed partner, then the Success Score needs to be at least 16.