Does he have to fight hard already? Has he taken breaks often? Let him fight. Give him at least 10 breaks.
Then you get mad at him.
Lay him on his back and start riding him.
You're such a boring fucker, I really want to get fucked.
Now give him the rest.
Give up! Your little penis will never be able to satisfy me! You're a failure in bed and I am finally allowed to fuck other mans with big cocks.
Repeat this until he cum inside your pussy.