<human>: Could you distill the essence of the text into 1-3 sentences?

I have been talking to this girl for a few months and I developed feelings for her, she seems interested in me (always replaying to my texts quickly and telling me she enjoyed our "hang outs") but sometimes she doesn't seem to respond to my subtle advances. 

I picked up on a few things she has said and she does not strike me as the person who has been in a lot of relationships (or even one). So I'm having trouble talking to her the right way. We seemed to click the few times we went out, we joke around and have many laughs, but she avoids serious topics.

I consider myself a decent looking guy and I have some confidence, but she is the kind of girl that makes you freeze a little when you try (we all have experienced one).
So I need help from you guys. Some advice on how to talk to reserved women and get them to open up or come out of their shell would be extremely appreciated, Reddit could be the reason me and my future wife are together.
 Thanks a lot for the help.
<bot>: Been talking to this girl for a few months, want to tell her how I feel but she is emotionally reserved. How do I approach her and tell her to make sure she understands me and doesn't feel awkward or clamps up.