Ex gf got into quick relationship, but we have still been hooking up. Need advice

So about 3-4 months ago me ex Gf broke up with me. We were very much in love but I was going through some issues and not giving her the attention she needed. After breaking up with me she quickly regretted it and wanted me back. So for the next couple months we weren't dating but we were pretty much acting like we were. Than one day she asks me what I want out of this, and I told her I was happy with the way things were going, because in my head we were pretty much together, but I guess in hers that just meant I wanted to be friends with benefits. Than about a week or so later I decide to talk to her and see if she wants to officially date again and I find out she's went on a couple dates with a guy and she tells me it's to late. So she starts seeing this guy and quite quickly he's already spending many nights with her and going on weekend trips and whatnot. But throughout this whole time we are still hanging out every couple days and hooking up about once a week. So as she's getting more and more serious with this guy, she's still telling me that she finds me better looking and says the sex is better with us, and even told her new guy that, or so she says. Than last weekend for her birthday I took her to a 2 day music festival and we had an absolute blast. But a couple days later she tells me she's not comfortable hanging out with me anymore and says we need to cut off contact for a while. I'm seeing her for a couple hours tonight, and then leaving for a week on vacation tomorrow. I very much want her back, in whatever form she would be comfortable with, but I don't know how to play my cards right. Any advice would be greatly appreciated! Sorry for the length of the post.

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