recently. my FB has this strange request for me to slap her face while i fuck her...i don't dare to slap her 'hard'..and i don't think she enjoy my 'gentle' slap. she even hold my hand to slap her harder whenever she thinks i am too soft... any bros have similar experience? can share or teach me how to satisfy this kind of request? i really don't have the heart to slap her face so hard....