You poor thing, praying for you.
There are plenty of harassment type warnings you can do. When I was harrassed, the local PC (ask to see a girl if it helps) left a voicemail with her details on the offenders phone and inviting him down to the station for a 'chat' (after I showed her all comunications from said idiot). This guy was an unpleasant type- fingers-in-pies mafia type. Yet it was enough to scare him off full stop. I hope this gives you some confidence.
Remember, in terms of your vulnerability- you have now deleted your 'live' presence off the net. Even if this nutter took a screenshot of your working sites in the past, and posted it to your family (worst case scenario) things can be photoshopped. (FYI I've just photoshopped the face of the malicious girl who outed me onto something incriminating
). So you can say to your family, as Carla suggested, that it is a nutter ex and he is trying to 'punish' you for splitting up with him, or something along those lines.
Finally from a strategic point of view, you need to look at this guys weaknesses if you decide to not go down the police route. This can only be done once you've 100% established it is the same guy you think it is.
1. He is/fancies himself as a bit of a 'hard man' therefore his reputation is very important to him
2. The fact that he has gone to such effort with you in particular, coupled with his evident dislike of your boyfriend being cool with things shows he is having a (psycho) hissy fit that he can't get closer to you. It sounds like he felt he could take things further (you had a number of overnight bookings).
3. The police are probably already aware of him if he's trouble and are dying to catch him out. Sometimes just the threat to go to the Police is enough. But I'd go to them anyway.
If he has been using the number longterm, the Police can find out through his phone company his calls, texts and his name if he's registered. But he's probably clever enough that it's pay as you go. It's worth a shot anyway.
In terms of avoiding starving to death: Have a look at the thread I had about my 'outing'- SW5 and others mentioned some useful details about using a Dongle/different internet altogether to set up a new AW profile without it being linked to your old one (it does this by noticing the IP addess you log in with). I would quickly set up a new one and take some cheapy home snaps to get you started again, at least on AW. Whatever you do, don't include your head or a vague location at all, or a number, so the nutter can't trace you. That way, you'll hopefully get some bookings, to keep you going temporarily.
It's a bank holiday, so the organisations I was thinking of suggesting would probably not be open- perhaps SW5, Amy or Anika might know one that is particularily relevant in this case if you really don't want to go to the police? I really think you should as you'd be surprised how helpful they are, and if in the event that they play silly buggers you have the law on your side, you are doing nothing wrong or illegal, and you should expect their full support and assistance just like any other law abiding citizen who is victimized.
Above all, big hugs, try and distract yourself as much as you can xxx chin up and things will get better, does your boyfriend know 100% what is going on?