Dating

In the last month I have realized that there is a box.  Yes a box.  Where all (most) teenagers live.  In this box, as far as relationships go, there is no such thing as Dating.  You are either in a relationship or you're not.  There is no in between called dating and the majority of my friends and fellow students do not grasp the concept.  They condemn me because I have, in fact, been dating.  I have been seeing a few different people since I've split up with Tim.  One friend in particular called me a slut, when I have done really nothing physically with any of the guys I've been out with.  There are really only 2 guys that I've been really seeing.  I went on one date with a bible humper and that was the last of him and I've been seeing 2 guys for the last few weeks.  I'm not looking to get into a relationship just yet.  I'm not 100% sure what I'm doing as far as college, I'm just out of an "engagement", and I just want to date and have fun and get to know different personalities before I get into another serious relationship.  So while dating: there is no committment, and the option on both sides to see other people. . .is that really that hard of a concept to grasp in high school?? I'm 18 years old and a senior. . .why is that so horrible?? I'm not having sex with every guy I go out with. . .so what the hell?? Whats wrong with dating??  Why don't any (most any) of my friends get this??  GAH CONFUSION!!!