How can I fuck her harder?
I was having hotpast with my girlfriend, we really enjoyed it, especially me, and we ended up talking about an experience of her with a really big guy who was doing it in a very aggressive and forceful way.
At that moment, I asked her, just to provoke me further, if he was going harder than me, and she said yes, that he was going much much harder and much deeper
Obviously, that night was great for us, but this part really got to me; I wanted to know how to have sex with her more intensely, in the same way she remembers it with her former partner.
How can I fuck her even harder? In this case, considering that what made him go harder wasn't his bigger size or their position. Would exercise be the best option?
EDIT: Hotpast is a fetish that uses past experiences as a form of provocation; we've both enjoyed it a lot for quite some time.