I think it is generally sexier to concentrate on your own pleasure rather than your partner's if you do it in a way that is validating. It creates a better arousal feedback loop or something like that. You really can't go wrong with any statement that starts with "It really turns me on when..." or "I like it when ..." or "I wanna...". My current personal favorite is when GP says "Damn, baby. DAMN!". -lol
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver