I'm a recovering "Mr. Nice Guy" but I think I'm heading in the right direction...

So the other night I had this girl over my place. I already knew she wanted me so it was really easy to get her to my bed, undress her and all. But then when she was naked, i told her to "go down" on me and she flipped out, like "I can't believe you said that" and "I only do it if I want to" blahblahblah.
In the old days I would have probably just apologized and try my best to make her stop being mad... But instead, i turned the whole situation around: I stopped touching her, moved away from her and told her that I will only have sex with her if I want to, and I don't want to do it unless I get a BJ. After that, I turned my back to her and pretended to go to sleep.
What did she do? did she leave? did she get more mad at me? Not at all!
After 5 min she started mumbling some vague excuses about the way she acted with me (to which i didn't respond) and another 5 min later she was begging me to let her blow me. I let her (of course ) but was still acting kind of pissed of about her giving me that attitude.

I think it s a pretty good example of turning a girl from aggressive mode to defensive mode, which you always wanna do when in trouble. If you act like your mad at them for acting up, then girls (who are attracted to you) would do anything to make it up to you