So if you want to get closer as a couple, get out of the habit of attacking her mouth and lay romantic lip caresses on her most sensitive areas. You may not find a sweeter spot for her emotions than here. Fingertips have a huge concentration of nerve endings, making them sensitive to anything from little pecks to a long suck. Here are the 7 sexiest things to do with your hands during sex. Know these five facts about her breasts as well.