The message you've sent her is that she isn't important. You'd rather be off running around with your buddies than remember her on her one day of the year. She's reacting in a like manner, signaling you that you too can be replaced. At this point, there's a fair chance of gamesmanship instead of honest communication.
If you want things to get better, apologize to her and ask her forgiveness for being thoughtless ... and then don't repeat that behavior.
If you want things to get better, apologize to her and ask her forgiveness for being thoughtless ... and then don't repeat that behavior.
