What is this?

[ZeusXI]

I know this is a tech forum, but some person (i have no clue who, i just have a name and i dont know them, never seen them, or even met them) but they went through my girlfriends phone, got my number, and started texting me. Also, said person has admitted to going through my facebook profile to my girlfriend, and also has done some background on me, for reasons i have no idea, but i have nothing to hide so i could care less to that. AND he figured out where i live, and facebook, here, or anywhere, tells where i actually live. So what is this called? Stalker? Can i put a restraining order on him? cause honestly, hes really creepy since hes like 36 (after what my gf told me)

[jol159]

i would personally call the police