<human>: Summarize the given text in a few sentences.

I'm currently working and travelling around Australia and I met Rob on my travels when he was working at a place I was staying. We hung out for a few days, slept together and had an insane amount of fun. He's not my usual type, but I was crying with laughter basically the whole time I was with him.

We added each other on Facebook and when I left (we were only staying at the same places for about 4 days) we would occasionally send flirty messages (a long conversation every couple of weeks). We arranged to meet up a few times in different parts of Australia but we were never in the same place after that. 

Rob messaged me the other day to ask where I was. He had gone back to our home country to visit family for a few weeks and was hoping I was there so he could come see me (bear in mind we live 4 hours from eachother). I told him I wasn't but to visit me when I'm back in a few months. Rob said he is going to New Zealand in a month for a year and I should come visit him. 

He's invited me out there for a week to stay at his place and basically spend a week in bed and sightseeing. It sounds fun but I'm scared of going alone with a guy I've known for such a short time. I don't know if it's a fun adventure or a really stupid idea. Also the fact that we go for so long without speaking worries me, what if I book tickets and he gets a girlfriend or something?
<bot>: A guy I've only met for 4 days asked me to stay with him in a country I've never been to. It is a good idea or stupid?