If you focus your attention on trying to prevent all kinds of error to happen, you are likely going to act needy and romance won't work well. A highly optimized process might get a pickup guy laid but it doesn't produce a real connection.

Good romance is about enjoying the time you spent together instead of optimizing all the actions that you take while you are together to achieve some future goal.

While dancing Salsa or Bachata I can produce pretty strong intimacy fast, by being in the moment. If I however dance really intimately with a woman whom I just meet I often get inside my head and think whether what I'm doing is alright and about the consequences of my actions. That in turn messes up the whole interaction because I'm not acting based what I'm feeling in the moment anymore and that's going to feel strange to the woman.

Being vulnerable is also important for romance and drawing fault trees doesn't help you to get into a state when you are vulnerable and can allow yourself to be touched on a emotional level by the other person.