I feel like I have to do something to make my ex see how bad she's messing up here. I'm being honest here. I don't know what to do, though. I. don't. know.
Ever heard the phrase 'There's no such thing as bad press?' not giving someone the time of day is still giving them something. Your decision to not give it to them.
From where I stand (and it's a very maslow perspective, if you'll forgive the Milgram name) we choose how we feel. Other people can not make us feel happy or sad. You may laugh at comedy or cry at tragedy, but it's because you choose to. Take away that power...if you're sad, that's fine - but CHOOSE to be sad. Elect to be sad.
You allow yourself sadness; you allow yourself happiness. Don't ever let someone else dictate your internal feelings, nor should you ever apologize for them. Once you realize you choose how you feel, life gets easier. 'I choose to go gambling' - then you can't be upset about lost money. "I choose to be sad" then it's not her/he/them making you that way. Control yourself, don't let anyone else run your life.
Then again, I only did 6 weeks in a psych rotation....