What to do after she brozone me?

So me and this girl has known each other for like a year plus now and she ask me if I had a girlfriend and I was like no her reply did not come untill the next day and she said why don't I ask her out and I known she had a boyfriend at the time, I said "ok" I asked her she said nothing and I just left then later she called me and she was all like you know I have a boyfriend, I said yeah I know, then she asked me if I wanted the relationship
I was like yes cuz I really liked this girl she told me if I felt comfortable with her dating two guys at once I was like no problem cuz I really didn't care cuz I was about to start uni so long distance thing to cut the long story short. I came back from school she was happy and all to see me two weeks later we started caressing each other and she was happy then my bond and love for her became so big and large then she had her off day on a Monday invited her over to my house did not really things will happen and all but Sunday evening call to ask if she is till coming she said yes so Monday 12 mid day this girl is a no show call her and she told me she ain't coming again I a so fucking angry I let that go then just yesterday she told me she fucking "sees me a her younger brother" i wad so pissed i had mixed feeling, ask her why she said the age difference is the problem just two fucking years older then me
The worst part is we work in the same place...
What to do after she brozone me?
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