Glad you were able to meet up with your friends. It doesn't matter what it is, if you enjoyed it then it was worth doing.
If he schedules something in the future without talking to you first and just "assumes" you will be there maybe you should keep your plans with friends instead.
If the time doesn't work for you tell him he can reschedule it or be there himself.
Accept what is, let go of what was, and have faith in what will be
