Blanca's right. Your motives are flawed. You should shag a girl for your own enjoyment. Not to boost your confidence or to impress others. Sex is to be enjoyed, not looked upon by outsiders as a badge of honour. Chasing down this girl seems pointless. I don't think that you should model your behaviour in order to get this girl to throw herself at your however. Once you have got yourself out there involved with more girls you will simply wonder why you cared about this girl so much!

I assume this is the same girl you mentioned in another thread. Move on mate. Give yourself a chance of progressing and go out and meet others. She'll only bog you down.