She was honestly harassing you to get her way. She didnt listen to what you were saying, your feelings, and even addressing her own feelings. She decided for herself that you went out with this person when you didnt, she decided that she was at home sad when you were both broken up (I mean, come on, a break is a break up, there is no difference) and you went out with friends. She is constantly harping on it to get her way. I find this very manipulative, really about getting what she wants, not rational, reasonable, or respectful. On top of that, she went on to contact someone she doesnt know, that you work with, to ask to remove a picture and she strongly implies you were seeing this other coworker when you werent. She has crossed a ton of boundaries, she is doing what she can to make you do what she wants, and to top that you know this is all bullshit about control, shown by the sad crocodile tears she used to manipulate you to make you feel bad. She immediately was just dandy afterwards. She doesnt sound like a good person to marry at all. She doesnt care about boundaries, feelings, or communication. She just demands and expects it to happen. Yes, you should have never told her you would (cmon, you just said it to shut her up at the moment) and she manipulated you into that statement. I think you need to take some time and step back from this relationship and really really reconsider whats going on. Whats going to happen if she wants kids before you do? Whats going to happen if she wants to buy a house and you dont want to? Whats going to happen if she has anything she wants you dont? Tears gonna be turned on, you are going to be harassed, have boundaries eroded, and you are going to be manipulated. Is that the kind of person you want to be married to here?