Clingyness?

I just started my first relationship (I’m 17) and I’m a pretty independent person. I don’t really feel a constant need to be with my boyfriend and when I’m with him I don’t need to be touching him (non sexually) in some sort of way to feel good. In no way am I comparing my relationship to others but I always see other couples constantly cuddling each other or having some sort of physical contact, so this might be a ridiculous or obvious question but what exactly is being “clingy” and does a person have to be somewhat clingy to have a good relationship?