@Kath9
Wow Kath, that's a really dangerous scenario, you just don't know how serious or desperate (sorry no reflection on you) some of these nut cases can be!
I have said it before here on the CC, and I say it to all female hosts who host alone, that I know.......Always give the impression that there is a partner in the wings, a significant other in your life, both with face to face contact and in the listing description.
"If there is anything you feel is not covered in my listing description either I or my partner would be only to pleased to help"!
"If I am not available I am sure my partner will be able to help you out"!
"I will speak with my man and see if he is ok with that"!
You don't have to say you live with anyone, just give the impression that you are out of reach, you are spoken for.
As far as this 'guest' is concerned he knows how you live at this point and although you don't want to host him again you want him to leave you alone on your personal phone so, you can (after a few weeks) message him through the Airbnb message stream and say...."You did say during your stay that a return in the future was on the cards, I have good news, I now have a lovely partner on the scene that helps me and makes my hosting so much easier. Just letting you know my change in circumstance which might help with those future visits!"
Something like that would let him know that you are out of bounds.
It's so unfortunate that women are vulnerable like this Kath, but to protect yourself don't leave him a bad review! You can just say ...."xxxxxx was good company, although at times, just a bit too familiar and possibly struggled with my hosting boundaries. A good guest, who just needs to learn to perhaps respect those around him"!
That way Kath, you have got your message across without calling him creepy, or saying he was a bad guest. You have to protect yourself first and foremost Kath, and although it would be tempting to say he was a lecherous old creep, a sexual predator, that will get you nowhere and in all probability Airbnb would remove your review if he complained
Sorry you have struck this Kath, chin up and hope that he disappears!
Cheers......Rob