boyfriend (24M) upset that I (23F) didn't wish him a happy birthday at 12 am
hi everyone,
my boyfriend's (24M) birthday was this week, and I (23F) never forget his birthday. I knew that his birthday was the next day, and since we're currently in different states, the time zone is different and I'm a few hours behind. He's been complaining about his sleep schedule and how he stays up late, so I've been concerned about making sure he sleeps on time and hanging out with him earlier. I was so concerned about making sure he sleeps that once 12 AM rolled around in his time zone, I didn't wish him a happy birthday and I was telling him to go to sleep. He was short with me after this and I didn't understand why. The second I woke up the next morning, I wished him a happy birthday. When he got back from work, he was still short and upset with me and said "thank you for remembering eventually", and I apologized and said I was sorry and that I understood that my mistake made him feel unappreciated and forgotten. He was still short with me and normalized a little later.
Three days later, he told me that he was really upset that I had forgotten to wish him at 12 AM and that he was staying up that late hoping his first birthday wish would be from me. He said coworkers remembered and that he's more than a little upset that I didn't wish him first.
I tried testing the waters about it after apologizing a lot, and he still says "it had a large impact on me". I had no idea that it meant this much to him and this hasn't been communicated to me in the few years of our relationship. We've been long distance for over a year now.
How do I make him less resentful about this?