my first girlfriend (8th grade) was a horror story, but i'll share it anyway because there are DJ concepts to point out.
At this age, I didn't know diddly squat about how to attract females. I was a total AFC wussy boy and i was seen as the "nice guy" a lot.
I rode a bus from school back to home every day, and oftentimes this girl would sit next to me. I wasn't interested in her because I felt that I was too short and she was too tall, even though she was a grade below me. She was nice and we talked a lot; we even talked about how horribly my love life was going lol. I grew accustomed to seeing her as just a friend, but one day she just confessed that she had a crush on me. Being the desperate AFC loser I was, i practically immediately asked her to be my gf. lol. sad. I eventually became clingy so she dumped me =P
The thing i wanted to point out is this: At first, I never showed any signs that I was really into her, and I never acted in any needy or desperate way. I was being cool and comfortable with her; I was basically being myself. My initial lack of attraction for her didn't make anything awkward and left plenty of space for her to have an attraction for me. When I started acting differently, the effects reversed.
Of course, I don't believe that in order to get a girl, u must be uninterested lol. Conceptually, I was unintentionally following some basic rules of attraction because I wasn't hectically focused on "getting the girl" as if my life depended on it.