I recon it would be fun to fuck her immediately after he had finished fucking her, shes normally very tight, but obviously she wouls be very well lubricated both by his cum but also her own, also she would be really stretched by his cock.
Im 7.5 which is an okay size, my wife enjoys my cock, but she loved his, she was turned on by the shear size of his cock. Would i like him to fuck her again? 1000% yes! As long as i get to sit and watch
Before i met my wife she had a regular fuck buddy who had a 10+" cock, i love knowing hes been inside her, whenever i fuck or lick her out i think about how good his cock would have looked inside the woman i love.