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

This all started about 6 months ago when a mutual friend introduced the two of us at a party. For the sake of avoiding confusion, lets call my significant other (or whatever she is) D. D and I hit it off at the party. It was a relatively small get together and everyone knew each other, so trying to be discreet about what was going on was tough. One thing led to another, and D and I ended up sleeping together (no sex involved this time, it was just more comfortable that way). The next day in school, everyone thought we were an item, so we just kinda rolled with it. She seemed to be very into me, and I definitely had a thing for her. Aside from the awkward kiss every now and again and the nearly constant stream of people asking if we were dating, things were going good. Fast forward to last Friday. We decided to try to make something of this awkward debacle, so D and I went to see a movie. We ended up having a fabulous time. We did the typical couple stuff at the movies and all was well. When I took her home, I failed to kiss her at the door solely because I think that's the most cliché thing in the world to do. I wanted our first kiss as an actual couple to be memorable, but instead I think I messed everything up. Monday and Tuesday were both incredibly awkward. We exchanged a few words here and there, but the spark was gone. Now that I have some pretty serious feelings for D, I no longer have any idea how she feels and I have NO idea how to approach her without sounding needy or overbearing. I'm so sick of being put in the friendzone and I want to avoid it early.
<bot>: Had a thing with a girl at a party, things got weird after a date, and now I need some advice to get her interested again (and hopefully avoid the friendzone)