Not that strange
When I was younger my friends and I used to hug and sometimes kiss. During sleepovers we would dare each other to do other things. As we started to develop and get on with boys we stopped. But then as we all got more comfortable with our bodies we started to touch again. I am not a lez, but I feel very comfortable rubbing a friends nipple or pinching her butt. I have even had girls finger me and it feels so much better when a guy tries to do it.
Sorry, we girls know what we like and it's normal for us to be sexual with each other.