I invited one of my very best friends to my sons wedding this summer. This is a friend that I spend most of my social activities with. Save the date notices went out several months ago. From the start she has been reluctant to commit & never said once. That she would be looking forward to sharing this date with us. Instead She said she might have to go to a grandchilds birthday that weekend.. The wedding is out of state. This friend has just informed me that one of her granddaughters is having a birthday party on the same day and so she & her significant other cannot attend. Both my husband and I are crushed.. This kids birthday party will be one more of many others. A wedding is usually a one time event. Do you agree or are we over reacting.?