<human>: I was good friends with this girl, let's call her Anna, for a few years at school. We hung out every day, talked a lot and were good friends. I had a crush on her, asked her out on a date in early 2013 and she said no, saying we were better suited to being friends. I still liked her after this, we remained friends and I was happy to keep it that way.

In March 2014 I moved away to college having not spoken to her in person since new years and only a few times online since then. A couple of months passed and she messaged me saying she hadn't heard from me and wanted to know what was up. I figured that this was a chance to move on from my crush on her and so I responded like a total asshole by only sending her those stupid facebook stickers and ultimately said "I'm busy" and didn't message her again.

On Halloween we both attended a friends' party and I was well and truly over her at this point, I didn't think about her at all. By the time she had arrived I was pretty drunk (I arrived early to help setup and we'd been drinking all day) and we talked for a while, and I really enjoyed talking to her just like old times. However, I was super drunk and it was quite obviously a drunken conversation, not a legitimate catch up.

Since then I've moved back home (college dropout) and have been thinking about her again, and I'd really like to ask her out on a date, which hasn't been a big deal for me with other girls this year but for some reason I'm really hesitant to send her a message. I think it's because I know I treated her poorly when she reached out to me earlier and I assume she resents me or something. If I do end up messaging her, how soon should I apologise for how I acted, if at all? Maybe I should just leave it alone?

Can you give me the gist of the text in a nutshell?
<bot>: had a crush on a girl, moved away, ignored her when she contacted me while at college in an attempt to move on, am now back for good and have a crush on her again. don't know how to proceed.