I really like how they will woohoo on their own, but I really hope they do *something* to make sims relationships be more realistic. I'm having a hard time wording it just right, but here is an example.
I'm playing the random legacy. My main Sim, Gemma, rolled to be single with two helpers. Her two helpers are SueAnne and Jack. SueAnne and Jack are married. They are soulmates. Gemma is their close friend and they are her in-game born daughter and adoptive daughter's god parents. When I first played my game after the update/patch, not only did SueAnne and Jack autonomously woohoo once, they immediately went back for round two. I love that. It completely fits with these two. They are very much in love with one another, but they love Gemma as if she were their sister.
Jack has now been flirting with Gemma. He's even rolled the wish to have first kiss with her. Sometimes she accepts his flirts, sometimes she doesn't. But it is killing my story. These two are not that way in my head. I think once you reach a "soulmates" status with a sim, you do NOT auto flirt with other sims and you do NOT accept flirts from other sims.
Jack is always the one initiating it, never Gemma... but she doesn't always say no. If those two auto woohoo... I will be upset. SueAnne will be broken hearted. While part of me is thinking... yeah, it'd make for interesting story, the main part me of is just upset thinking these two are going to kill the story I'm going with already.