<human>: She lives about 45 minutes away from me. She's been working like crazy these days and has been having a rough time with school. We don't see each other as often as we'd like so when we do we try and make the most of it.

Last night my friend had a birthday party supper that she had invited me and my girlfriend to. Afterwards they were meeting other people at the bar. Some other friends who I had also not seen in a while were already there. My girlfriend had worked all day and didn't really want to go out so I gave her the key to my apartment and told her I would be back in an hour. I get to the bar and my friend buys me a beer and tells me to get the next one. I told him I wasn't planning on staying too long but I'll stay for at least a little while. 

I ended up getting pretty drunk and getting back at 4 in the morning. This morning she left without saying goodbye and seemed upset but I didn't think much of it. Tonight I called her on facetime like we normally do and she didn't respond to the funny face I usually make at the beginning.

I start talking about mundane things that happened in my day for a few seconds before telling her that I feel bad for ditching her last night. She was extremely upset. She was disappointed that I would lie to her and not come back after an hour like I had said. She said she doesn't know if she could see me the same way anymore. She had stayed up until 1 in the morning waiting for me. I didn't even realize that she would be up waiting. I was selfish and figured she went to bed so I didn't even text her goodnight.

I know it's cliche but this girl is the greatest thing that's ever happened to me. She doesn't deserve to be treated this way. Other than not doing it again, how do I make it up to her? I'm thinking of getting to her house tomorrow and waiting for her to get back from work. I figure if I surprise her it would be the opposite of her waiting for me and me never showing up.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Told my girlfriend I would be back in an hour, she waited for me all night only for me to show up drunk at 4 in the morning