You already bought her something, that's the opposite of slow. You don't start buying them gifts until at least a year of actual dating.
It still worked. She called me the next day and told me that she liked me.
If eating paintballs was my pickup line I wouldn't have a girlfriend right now.
I ate the paintball because I wanted to. Paintball is still a passion of mine, whether or not it involves her. They say you are what you eat. With any luck, I shall become paintball.
If you have to give them something it shouldn't be expensive or flashy. Save that for at least a year or more.
All I got my girlfriend last year was a cardboard display of Doctor Who that I ripped off of Walmart.
It was a god damn coffee cup lol.