I wouldn't neg too much on text, as you noticed it's easily going the wrong way without you having the chance to recover. The good thing though is that she's answering your texts and you have been on dates so she must be some sort of interested.
Why don't you just set another date? 'Hey hun, I'm gonna be at placeX at that time so come over to placeY so we can eat/drink/whatever'. Don't ask, just state. If she can't at the proposed time don't worry. There's a non-verbal agreement now to meet eachother soon so you can set up a new opportunity fast.
What kind of intern are you?
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Be always on the move, it looks dynamic!
