I'm confused, have I been Bro-Zoned or is it something else?

It's hard to put into words but I'll try. We hung out romantically a few times, but she went with another guy and after awhile we became good friends. I see her almost everyday, we play fight, she hits me at random moments ( I ask her why and she says she doesn't know why), we tease eachother, she says she hates me (in a playful way). She has recently started calling me Bro. Her boyfriend has shown some signs of cheating or something of the sort that she has told me. There is some other stuff too, but I don't want to rant about this. I need some outsider input on this.

I'm confused, have I been Bro-Zoned or is it something else?
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