Help me out with this dream?

its been happenin for a couple of days now i dream im sittin in math cl then this guy walks in and tells me my gf died i bolt out da cl and next thing i know im at a car wreck and they are pulling her out and i start crying then my best friends sister comes out of nowhere and starts hangin on and kissin on me i try to push her off and she says come on shes gone now and shes not comming back