Throwaway account because she uses reddit and i dont want her to see this.

I went out to a restaurant with coworkers to celebrate me getting a promotion. This meant a lot to me because this is what I have been working towards for 4 years and I've finally accomplished something of importance in my life. My girlfriend (dating 10 years) was invited and I really wanted her to come, however she didn't want to go because of personal reasons. She asked if it was OK if she didn't go and I said it was fine but I still continued telling her she was more than welcome to come even on the day of the event.

On the day of the dinner I went to the restaurant by myself and I kind of felt sad. I was really happy to see my coworkers and I was having a great time but it was sad to see all my other coworkers' significant other be there with them and my gf couldn't come to celebrate me who this party was for. I understand why she didn't want to come and didn't hold it against her but I started to get angrier at her as the dinner went on because she's supposed to be here to celebrate with me.

Once the dinner was over, most coworkers went home, but me and a few coworkers decided to continue the party at a bar. My gf texted me a passive aggressive text and another text asking what time I'll be home. This made me even more upset because she said I can go but now she's upset. If she had come like I begged her to the passive aggressiveness wouldn't happen. I ignore the passive aggressive text and tell her maybe around midnight. She starts spam texting and calling me and tells me that the restaurant closed an an hour ago and asking where I was. I told her the bar's name and who I was with and I tossed my phone in the car because I know she was going to be upset at me being in a bar since I didn't tell her beforehand. I didn't want to deal with her snarky attitude and comments, this was my night to enjoy myself and to celebrate myself and none of this would have happened if she came with me.

The bar closed at 2am and my coworker said he didn't mind driving me and my car home so I didn't have to come back in the morning to pick it up. By this time I was pretty drunk and exhausted and probably drank more than I should have and wanted to pass out in bed asap. When I get home I locked the front door and then the dead bolt. I always lock the dead bolt so I did this out of habit. I went straight to bed and passed out. To my surprise, my gf wasn't home. I didn't know this at the time because she never goes out this late and I assumed she was sleeping in our spare bedroom since she was upset at me and I didnt check because I had a major headache and I just wanted to sleep.

The next morning I got up around 10 and looked for her because she usually wakes up around 8. I realized she wasn't home and realized my mistake so I unlocked the dead bolt in case she came back. Unfortunately, I forgot I left my phone in the car so I couldn't call her. I was super hung over and had a throbbing migraine so I went back to bed.

She enters our apartment an hour later and starts yelling at me "what tf am I doing and where is my phone?" I said I forgot it in my car and she continues yelling saying she was locked out, banging on the front door and why did I not open. I tell her I didn't hear her because I passed out. She said she banged on our bedroom window. I told her I didn't hear that either which I really didn't. She said she was banging for 30 minutes. I didn't say anything and she stormed off. I was still too hung over to really process anything.

Its been 2 days now and I haven't seen her since. I told her i was sorry, it was an accident and I passed out from drinking but she's debating on ending our 10 year relationship. I still love her a lot and I regret my actions and I very rarely drink this much. I was hurt that she didn't come to my party with me to celebrate so I kept drinking.

Aitah for accidentally locking her out and is she in the right to consider ending our 10 year relationship?