Am I crazy?

In order for me to give the full story it will take some time. I'll see if I can shorten it....
I have been dating this girl for about a year and a half, off and on. I am 25 and she is 22. She has a 3 year old daughter with her ex that I haven't met in person but who knows about me.
About 6 - 7 months into us dating we broke up. Main reasons being I was staying at her place because I felt she wanted me there more and I was neglecting my friends and getting it from both ends. If I was with my friends she'd be blowing me up wondering where I was and if I was with her my friends would give me grief for not hanging out. We were broken up for about a month and during that month I hooked up with my ex and a new girl a few times and she tried dating her ex (not her babies dad). Well one day we met up to exchange stuff and all the feelings rushed back to me and I got her to date me again. I found out later that she told her ex she loved him while we were apart. When I talked to her about she said she only said it because he said it then she immediately took it back. She also said she always told him that I was what she wanted. There were a couple times after that where we broke up but not as long as that first time and I never went back to my ex. I asked her one time that if she had even spoken to her ex while we were apart the other time we wouldn't be together and she said she hadn't. I later found out she lied and had talked to him again. She didn't do anything with him though. I have been working on my temper and so has she. We've been trying to work things out but we still have little fights here and there and they're normally over the same things just a little different. If she didn't have her daughter then I would not have tried this hard. And we also have two cats together so they are another factor making me work harder. I want us to work and I can see myself with her but her actions sometimes make me so angry I can't handle it. I am good at keeping my cool now and not losing my temper but it still makes me mad. Tonight we had a fight over money. I don't think I explained everything that well but maybe I gave you all enough info to give me some advice. If you are confused or have questions please ask them. Thank you.

You have not met the daughter but the daughter is the reason you have been trying so hard? I do not see how this fits.

In any event, both of you seem to go from relationship to relationship with regularity. Nothing you have written engenders any confidence that your histories will change. There does not seem to be any trust here. If this relationship is to succeed both of you have a lot of growing to do.

Actually, I think he meant he hasn't met the daughter's father.

I can understand how the child can make you feel like you should try harder, and I definitely agree. Once there is a child involved in a romantic relationship both partners should take things more seriously because what they do can effect the way the child feels and that's important to protect. But if you are unhappy, that's not setting a good example for the child either. It seems like maybe you have some trust issues, but aside from that you only fight about little things? Am I right about that? If that's the case and you do love her, then you need to talk things out and try to work everything out. I would say you need to decide one way or the other fairly soon because the longer you are in the daughter's life, the more painful it is going to be for her when you leave.

Asking what the other person does when you are broken up is always hard. When you break up, you break up. The feelings may still be there but you aren't together any more. It's like being upset because someone dated and has a history before you met. I totally understand the feelings of being upset she lied--lying just makes everything worse. But it seems there is anger on both parts about who you dated while you were apart. Working on anger is a hard thing...it's usually something we have had with us for a long time.

You are right. I have not met the daughter's father in person. I have gotten very close with the daughter and she is a huge reason why I've tried for this long. We have said that we need to talk about things more and part of that is my fault. I sometimes assume I know how she will react to a situation so I will avoid it at times. I don't like to fight so if there is something that I think she'll get an attitude about then I will avoid it. I don't know what to believe and what not to believe with her. I want to think that she means everything she says but I try to read between the lines and sometimes it seems like she just wants a complete family so bad that she wants to force me into role as husband/father figure even if I'm not completely ready yet.