I like how Frank is offering to die of embarrassment.
My female founder in my IDC autonomously had a 'woohoo' in the sauna with a female sim during a club gathering. It was before she was married. I kept the door locked after that. I think closets make it easy for quick hookups too. I wonder if having 'romantic interactions' at club meetings encourages random sims to hook up.
Some types of death are only possible (for me) with controllable sims. I'm feeling impatient to get past all death-related points so I can return to normal gameplay.
I realize that "woohoo in a sauna" is a Friendly/Spa Activities social, but my sauna isn't functional and my lot doesn't have a single closet.
My club has only "Friendly" socials, Cleaning, and various skill-related activities. I truly have no idea when their relationship triggered. I actually hadn't had Frank and Anita interact at all because he's only being mentored by Kaoru (handiness/fitness), so I never saw their relationship bars until "the damage had been done," lol.
I do have a separate club specifically designed to boost romantic socials; it's separate by design. I guess I just have too many working sims and haven't been paying close enough attention.
It's rather funny that, after all of our discussion about how unattractive Frank is, he manages to seduce (or be seduced by) the founder's wife.
Edited to add: While streamlining Frank's inventory, I figured out what started it. For his Chief of Mischief "voodoo doll" socials, I had him bind a voodoo doll to Anita because she was the only one free at the time. They must have started something then, but I'm still mystified.