That sucks that she dumped you, joazito, but honestly? From what I’ve seen in this thread, you’re better off without her.
I’m sorry about your breakup, joazito, but I have to agree with the others that you’re probably better off without her.
I think the one thing in this thread that pretty much all of us agreed upon, joazito, was that your girlfriend was trying to control you and that you needed to change that or you were in for a lifetime of misery. I’m very sorry that your relationship had to end this way, and I’m sorry that her son is having to go through this, but I think it will be the best for you in the long run. You definitely deserve better!
Good luck!
I wouldn’t say you were wrong for posting this, hon. Posting about personal issues with people off the boards can be really therapeutic. If nothing else, it allows you to vent, and having to articulate your feelings to people who don’t know anything about the situation forces you to examine them and clarify what you’re really feeling. Plus, an outside opinion can help open up issues that you wouldn’t necessarily see on your own. Sometimes the Dopers will tell you that yes, you’re completely right, sometimes we’ll tell you that you’re both partly wrong, and sometimes we’ll tell you that you’re a real asshole and need to apologize. Very helpful stuff sometimes.
I wouldn’t say you were wrong to show her this thread, either, though from what I’ve seen and heard of her you were almost certainly wrong to think this would cause any self-examination or change on her part. She doesn’t seem mature enough to accept that she might sometimes be wrong and then act accordingly. The real problem here is not that she was a bitch. Everybody’s a bitch sometimes, so having been a bitch doesn’t really say anything about someone’s character. How you respond to having been a bitch, though, says everything about your character. Someone who says, “I was a real bitch, and I’m sorry” then tries to make sure it doesn’t happen again is usually a good and mature person, somebody you should probably try to work things out with. Someone who refuses to admit to having been a bitch, or who makes excuses for being a bitch, or worse yet claims it’s all your fault that she was a bitch…that person is generally not a very good or mature person, and is probably not worth your time.
I’d like to ask you a couple of questions, also. You don’t have to answer them here, but you really should answer them for yourself, and be completely, totally honest. If this thread had been full of support for your ex’s behavior, would she have still been pissed about you posting it? Did you really want to go through the rest of your life with your social life being dictating by who’s pissed her off and who hasn’t?
Wise words.
So… Hi again. I’m reopening this thread to say me and my girlfriend are back together. I can’t thank you enough for making me realise some thinks are not meant to be accepted. Anyway, if things go on according to plans between the both of us, I’m really going to appreciate having you around. You know I’m going to need it… 
What a great bunch of people all of you. You’ve taught me tremendously. Thanks.