Just be yourself, there's nothing wrong with that. Nice guys only finish last with girls that do not like them all that much in the first place or that have many suitors. There is no race to anything, and it's all in your head. Honestly, just wait until you get older and little more successful, there will be more women hanging over you, happily or sadly. So in a way, you'll have your pick of women. The same girls that sort of turned you down when you were younger, will come back to you and all of suddenly be interested, as you've grown even more mature, maybe more defined, and successful in the American way. Then, you can politely or in even a mild-mannered, yet douchebag-ish way deliver the bad news to them that you are not interested in them as potential marriage partner. You can tell them you want some consistency in your life, someone you can trust, and indicate you might want someone a little younger with better assets. But, you are open to a quality open-relationship with no strings attached with anything. Besides, this world has too many ass-holish people in it, both men and women. You should take pride in the fact that you are at least a somewhat decent person with some sort of soul. If you see a woman with similar qualities, and you two have chemistry, go for it.
OP, depends if you want the hot chicks that all the guys want, or you want the normal chick that no-one wants. If the answer is hot chick: Act like you don't need her, that you are more valuable than she is. That you are the reward and that your not running after her. Act like she is ugly and you don't want anything to do with her. Pretty soon she won't understand why your not into her and will be intrigued - hence interested in you. Then it's game on. If the answer is the normal chick: Just go ask her out, you'll probably be the first. Show her your gift and pop that cherry
Nice guys finish last in everything, sex, war, business. The only way to have a shot at success is to have a mean streak, a trust fund, or supernatural athletic skills. Life is a macrocosm of high school, except worse.
Be polite and courteous. Come forward that you're interested in a girl right away without being creepy and let things fall where they may. Afterwards continue to be polite but act like you don't need any particular girl in your life because the God's honest truth is you don't. There are so many women out there. If you show a woman you appreciate her company but aren't desperate for her affection, she'll not only like you better, but she'll have some respect for you.