I suggest that you take her out on a date and apologize in person, face to face, and tell her how you feel. Tell her that you want a relationship and more. Put the MAKE on her and pursue her until she is yours. That is what manly men do. If you don't someone else will.
Forget phone texting. That is a very poor substitute for talking face to face, hugging and kissing her.
Now call her tonight to ask her out to dinner, let us know how she responds.