HELP with my friend?

Im on the phone right now with my guy friend and he keep stalkign about how he wants to stop eating and he wants to be as skinny as me he said he wants to be skinnier then nicole richie and he isnt kidding! i told him shes like anerexian hes liek i dont care i was telling him about how i didn tliek it where i live now he got moved to same place and sliek you should kill yourself with me. and right now he asked if i will miss him?? helpp what do i say?he talks about everything negative in his life