Well; it has the opposite effect, to be honest. Life lesson learnt: If you say something and provide it as evidence that you're not stupid, people will generally shake their heads and go 'Well; that wasn't very smart...'
After all; it's pretty much inviting ridicule. So friendly tip: Next time you get the urge: Don't.
Anyway, as for your OP: I would say the problem is with clinginess. It certainly does look that way. You haven't seen her for two years, but all of a sudden you're constantly there. Just... Constantly.
Another thing is: You've stated yourself that you wanted to become her SO eventually (even if you were just friends). That's... Well; it's just plain creepy. To set up a goal like that, wriggle yourself into someone's life, and try to methodically enter their space with the goal of a relationship... Yeah, I'm sorry, but it is creepy.
So that might explain some things.
My tip: Either leave her alone, or back off a little, try to contact her later on, keep the contact more casual, and forget about romance entirely.