I don't want to go on a date with someone I woohoo-ed with
Why would you woohoo with them if you did not want to date them?
I want to date people I don't know
If you do not want to be with that person then it is probably a bad idea to have sex with them. This is an example of leading a girl on in a way.
I'm going to break this rule whether you like it or not.
You are going to make life a lot more difficult than it needs to be if you do not follow this rule. When you have sex with someone, it makes them feel more connected to you. If you do not want to date them afterwards you are going to upset a lot of people.