Only 2 Sims, and the Angry Moodlet 🙄

I have two Sims in one household, Friendship and Romance is full. The Sims doesn't have another friends yet but very often a Sim is angry.

The Moodled says angry because flirting with another Sim, but there are only two Sims and they have no other friends yet (new household).

This is so anmoying 😑