In my case, I'm not scared of intimacy, actually my love for certain people I truly care about is very deep and intense. I'm not afraid of intimacy, I'm afraid that my deep love will scare people and push them far away from me. So to guard my heart and keep others' hearts safe, I create an invisible wall around myself and only people who are patient enough can step into it. This wall create a sense of distance around me.
Nevertheless, if I really can get into a intimate relationship, first I need to feel secure and love myself. Then I want to hold hands, hug and kiss the one I love, or even a gentle touch can make the whole world to stop.