<human>: Can you succinctly summarize the text in 1-3 sentences?

To give a little bit of a back story, the amazing girl that I am with tends to freak out about relationship stuff. She is an over-thinker and from time to time tends to get into sort of bad phases where I can't do much to help her.

Recently the topic of boyfriend/girlfriend label came up. I think we both sort of agree is pretty appropriate (her good friend agrees). She didn't really fully say that because quickly the conversation changed into her freaking out about moving too fast. Not moving too fast specifically, but she's scared about things falling apart in general. She says everything is going so well and she hasn't dated someone as great as me before, but she's scared that things can just crack at any moment. She assures me it has nothing to do with me, it's simply how her mind works and she gets into these phases from time to time but tries to block them out as much as she can. She says she does this in every relationship.

I don't know how to take this. I am myself spooked that maybe because she's so worried about things falling apart that she would intentionally/unintentionally lead it to that (although she assured me she would never do that). I can't help her, or really fully understand her situation. I'm an over-thinker myself and could be worried about the same stuff, but I don't really think about it. I just want to live in the moment, and for her to do the same, but she doesn't seem to work like that.
<bot>: Topic of boyfriend/girlfriend labels came up. She freaks and is scared that things might fall apart even though everything is going so well. I don't know what to do for myself or what to do to help.