<human>: Can you give me the gist of the text in a nutshell?

Met this girl at a Meetup in September. We are both new to town. I felt like I made a good connection with her that night, so I asked her if she wanted to get together the next week, of course she said yes.

We're both busy with work a lot, we text each other occasionally and get together about once a week. I definitely was dropping the hints and acting like I was interested in her, (paying for meals, opening doors, etc.) On our 6 or 7th "date" I went ahead and kissed her, and she kissed me back. I've kissed her the last 3 times I've seen her since, (like 30-60 seconds in duration) but haven't moved the physical relationship forward from there.

She is a shy person, I figured that out real quick. Still, I can't help but feel like I'm the only one that's really interested. She texts me only if I text her first. She is always up for getting together on the weekends, if I suggest it. She will kiss me back, if I initiate it. She's never said no to me. I just feel like she really doesn't care either way. And that bugs me for sure. The last few days, I've decided not to text her and didn't ask her out this weekend. Haven't heard from her.

I may not be the best at reading people, but she really doesn't seem like the 'freeloader' type. 

So what do you think? Am I getting frustrated over nothing? 
Are some girls just like this, even if they are interested?
Or am I looking at the writing on the wall?
<bot>: If I'm always the one texting her first, suggesting dates, initiating physical contact, is she just not that into me?