Please no autonomous woohoo

I've only ever had Sims autonomously woohoo when the pink and green bars are both really high. I did play one Sim who had no interest in romance of any kind, so she was a bit easier, since she rarely got the pink bar with anyone. When she did (usually from responding to a townie flirting after she'd watched a romantic movie), she'd ask to be just friends right away. I can see how having a couple you don't want to woohoo could be frustrating. The only thing I can think of is removing anything in the house they can potentially woohoo in, and that's a lot of stuff if you have all the DLC. No closets, showers, or double beds? Not a very practical solution. :(