Nope, I'm the same. Almost 21, never dated. Heck when two of my siblings and my mom were my age, they were married and had a kid. I'm fine with it though. I don't see myself getting into a romantic relationship, at least not in the near future. :)
No, I don't think it's weird. Some people get into serious relationships when they're young teenagers and others don't start dating until much later in life and others have no interest to encontro, data at all. Everyone's different, you just gotta do what you what you want to do so you can find that guy who you will be happy with for the rest of your life.
No, I'm going to be 20 in December and I've never even been kissed. There's no rule that someone has to have a boyfriend or girlfriend por a certain age.