Shinzon hears Ruekana hold back.  He looks up at her and says to her, "You don't have to hold back my love.  I want to know exactly how much pleasure I am giving you."  He then resumes licking and sucking on her pussy and rubbing her clit, as well as alternating between licking and sucking her pussy and licking and sucking on her clit while his fingers explore and gently fuck her pussy.