I'm just curious to know how these long term relationships in high school work. I'm sure you've all seen the couple at school that is always together and hardly ever talks to anyone else. How do you think they stay interested in each other?
You asked her if she wanted to grab coffee. Then you asked if the time worked. Then you asked if the place was okay. Then you asked if she'd prefer tea.
Four questions. Four chances for her to say no. Four signals that you're terrified of making a decision.
Plan it. Pick the place. Pick the time. Tell her where to meet you. She'll either show up or she won't.
Either way, you look like a man instead of a scared little boy.