Were you choosing videogames over her? Whatever it was, you need to pay attention to her. Girls like attention, even though they may say they don't.
Heres what you do. You buy yourself a notebook. Every day that goes by, you write in that notebook. Write down how you feel and stuff you think about. Draw in it if you like. Don't keep it in, let it out. Writing is a good way to do that sometimes. Then at the end of 2 weeks, you give her the notebook. It'll be shocking that you actually did something like this. She'll realize how deep you are and will appreciate you more. She'll love you. This is the emotional tactic. n_n
Entry for today should be:
It hurts in my chest. I can hardly breath. How can a girl that I've only known for such a short period of time make me feel this way? I think I'm in love with this girl. I can't even enjoy the things that I enjoy the most. I tried playing a video game, but my heart wasn't there.
The next thing you do, go make yourself attractive. Exercise, get a haircut, dress nice. Make yourself look good, for your self confidence. You want to feel attractive. You want to feel like you can attract other girls. This will give you an aura of confidence, not depression and sadness. If she so happens to see you somewhere, she'll want to be with you even more. This is part of the jealousy tactic. n_n
And staying away could be a good thing for you right now. She is 17. haha
So yeah dude, I've been through my share of these types of things. It hurts bad. I had a girlfriend one time that I was with for 2 years. Her parents didn't want me to be with her because they didn't like they way I dressed, thought I was gangster. So they thought I wouldn't get anywhere in life and that their daughter deserved more. I barely saw that girl, we snuck around to see eachother. After all that, yeah it makes you stronger.
Edit: and if she visits this forum and sees what I wrote to you, this mission will FAIL. >_<
