<human>: Provide a brief overview of the text.

I've been out of the dating scene for quite some time, and am shy when it comes to making the first move beyond "just friends".

I met a cute girl and she was very receptive to my flirtatious texts. We went out and the date was going great, with no awkward pauses or lulls in the conversation. I walked her back to her place, and as I hesitated at the doorway, she said "You can come up if you promise to not say anything about my messy room".

Wow, I thought to myself, she must really be into me. A girl inviting a guy up is code for physical displays of affection, right? At least that's what I've heard!

So we get up to her room and she asks me if I want to play video games. Great, that's a good way to ease into sitting next to each other and relaxing the mood, I thought. I tried to look for opportune moments to get closer and more cuddly, but none ever came.

An hour and a half later we get tired of the game, she notices how late it has gotten and says "well, I'll walk you out". No physical affection to be shown.

I know reddit doesn't have all the answers, but what do we think about this situation? 

1. Did she want (expect) me to make a move?
2. Did I mess up by not being more assertive? 
3. Will she give up on me thinking I'm not interested?
4. Or is she simply not into me as much as I thought?
<bot>: She asked me up to her room, which I thought was code for romantic stuff. Nothing outside of friend-realm happened, and I'm wondering if I missed a cue to act. Anyone care to theorize?