My mates a cop, but what she did wasnt right, I may have been d? Pls help.?

ok know my mate 26yrs, we went out to a club one nite. Didnt have a lot to drink weird guys hanging around us, one pick up my drink i saw him snapped it off him. then another tryed to kiss me so i pushed him off. I said to my mate these guys be carefull. Then whole nite is blank i remember chating to a guy at bar, am then outside with this guy. I say i feel very drunk, he says your ok, My friend rings me to see where i am, we then met up. My phone she rang 4 times and i only answer it one. That how disorinated i am, so we walking to my flat this guy with us. Yet am in such a haze, i dont even remember getn to my flat, dont remember my mate the cop leaving me when she go to my flat. Then am back in my flat this guy is in my bedroom, i know am in no state to fight him so i run to the batroom and look the door. I ring my neighbour and say am afraid he says run him out of flat and come over to me( He lives next door). So i run outa bathroom and screamed at guy get out cos you trying to take advantage. He leaves without a fuss. I then go down to my neighbours and stay nite with him cos am safe. Next day i return to my apptment my rooms is trashed the window open, my books thrown about and my porceline doll thrown on my bed. Whole nite a daze, I even found a use condom wrappped under the bed and it aint mine. I ask my cxop mate about that nite and she like oh wouldnt worry bout it. She then says she cant remember time she rang me. I get piss off and demande to know, All of a sudden like a true cop she rems exacts times she rang me, Yet it took 3mounths for her to tell me the thruth. She pretend she didnt know a ting. Now what sort of mate is that? What advce do you have, very interested to hear a cops point of view?