I've been friends with this woman for years and we had booked a trip away together in 2021. It got moved from 2021 to 2022 and landed on the week of her 40th. She's single and childfree so I checked she was happy with the date change and she said 'as long as you promise to make a proper fuss of me!".
We are away for 5 days and her birthday is in the middle of the trip. I found out through a mutual friend that she has booked a party for two days after we come back. It's a pub so she's not paying per head and it's about 10 minutes from my house.
I asked her why I wasn't invited and she said its because we're going away that week. We do have mutual friends that have been invited.
Is it unreasonable to be a bit hurt/annoyed by this? I'm also now not sure what to do for her actual birthday.