Have you spent much time texting before?
Try sending the girl just one text on the Thursday night, confirming the day after. Try not to make conversation through text - I find it kills attraction, and texts should be used for getting dates. If you have something important to say, give her a call.
From what I read, it sounds like you have built a sufficient level of attraction to this girl. Girls can often sense this; if you are conveying neediness, you may find that her attraction slowly dies for you. Maybe you've been in a similar situation, where a girl is displaying lots of interest, and somehow (even though you're a man, with man's needs) you don't want to get with her.
Just something worth noting for future reference: if you want to lock down a girl, make sure you have other girls you have access too. Then, you say to the girl, right, I'm going to get rid of all the other girls and choose you. That works a charm!
As you move forward with your game, you will have lots of great nights with different great women. Try not to get too caught up with just one. Keep meeting women and good luck
