Girls. Let me tell you something. You will not be able to move like this if you don't practice. This girl has spent serious time at this. There was a time when she couldn't move like this. But she wanted to fuck hotter than the girls who don't care to practice. And it paid off. Show your guy this and ask him if he'd like to be fucked like this. He'll say yes.
If you don't have the desire to fuck like this, you care too little about fucking, imo.