Am i the arsehole?
So, I'm a 32M and my girlfriend is a 28F. We're just coming up to our 3 month anniversary, which is in 5 days time (Saturday the 2nd of July 2022).
I was planning on celebrating my 3 month anniversary with her, doing the things most couples do on the important dates, making her feel special, buying her gifts, showing her my appreciation etc etc.
However, her Nan's birthday meal is apparently also on the same day, and I'm not on the guest list.
I understand that family comes first and everything, but the 3 month anniversary is traditionally a fairly important milestone, and I'm kind of upset that my girlfriend didn't remember or consider me.
Have I guilt-tripped my girlfriend? Or is she not taking our relationship as seriously as me?