He should lick her pussy.

The Doctor lowered Clara to the ground and his mouth explored her body. He felt her soft, smooth skin against his lips as he kissed her all over. He kissed her breasts and flicked his tongue over her erect nipples, taking them into his mouth and sucking on them. He kissed and licked his way down her flat stomach to her sex and he tasted her there, enjoying her sweet scent.

Clara arched her back as he licked her slit and clit and sucked her slightly protruding pussy lips into his mouth. He ate her out for a long time, making her cum and cum again. She tasted so good! He could do this forever.

"I need you inside me," she finally managed to say between gasps of pleasure.