I have a few things I want to get off my chest, they are eating me up. My brain is stuck. Maybe this will help?

So.... I was inspired by a previous post: Ignorance is bliss. This is what I think about and how I feel every day for the past 5-6 weeks. I am angry, hurt, and all the other emotions that go with a breakup. I know... It has been weeks, but it still feels like yesterday.
I admit to being... I don't know the word... drunk? I knew his password for his e-mail and FB. When he abruptly, like a few hours prior to the party, told me he was not going to my Holiday party for work. The curiosity over took me. We had been seeing each other for 6+ months and he totally flaked out on me? So I looked up what was going on in his world and found pictures (NOT NICE) and communication that implied that he was single and looking.
So... because I did not want him to know I logged in under his name, I simply told him that it was not going to work out. He said "OK, but I really liked you. Sorry it didn't work" THE END
Frustrated with his lack of emotion, I again logged on and said a few things to this girls he was flirting with. (Not mean or inappropriate, I simply told her about me.)
The following day I really REALLY regretted what I did, but what was done was done. I called to apologize he stated that if I ever contacted him again he would call the police. And then he dropped off the face of the earth.
We were friends for over a year, and one drunk night I lost it all... I don't know how to get over it?

The second thing: I have an ex in my life that will not go away. He is best friends with my parents and spends a lot of time at our house. He and my dad fixed some things on my car today.
I was very grateful and told him thank you several times throughout the day.
Then after our test drive, I mentioned that it would be nice if he could pull forward because where he parks makes it difficult for me to park. If the next time he parks could he please pull forward.
He went of on a rant that "everything he does pisses me off" And "It does not matter what he does because I am always pissed off at him anyway"
It hurts my feelings, he morphs it depending on the day. Any time I say anything that is not praise or appreciation he goes strait for the jugular? I don't know how to respond?
I guess I need to address these with my T. I always freeze up in the office. I'm glad I have a place now to talk. I don't know how I would get through this place that I am at right now with out PC.
THANKS ALL for listening to my rant.