asking out a girl by sms is a bad idea, should be done face to face or worst case scenario on the phone, i think you should give up on this girl, but you are really looking into thing way too much, just chill man, relax, u always need to show your confident and in control, girls can sense things like this, learn from your mistakes and move on, and never let rejection affect you, i have a mate who gets rejected all the time, but through his character, confidence and persistance, he still gets hot women all the time