You tell me what happen?

She was trying to get rid of you.Which she did by making excuses that you were being ungrateful.If it was my b-day I would want to spend it with my man.She was probably cheating.So you are soo much better without her.I would not even bothered to write her a letter.Screw her.You did not deserve this at all.Find yourself a new girl who is not a liar and has class.You sound like a great person.Good luck!