Looking for some advice...

So I let this guy when I was in Japan on an Internship last/this year. We kind of got it off pretty quickly and we went out a few times (to cafes, bars, etc) and we did have sex after one very drunken night.

Since returning to Australia (because COVID) we have kept in touch and message almost everyday. We've even had a few zoom chats and the like.

Since being badly bullied in my youth, I always expect people to only like me because they want me for something and then they'll drop me and so I never really believe that I'm worth being friends with or liked...

I really like this guy and he recently asked me to come back to Japan. He is Japanese and I think the culture differences may also be giving me a lot of anxiety...

Does anyone have any advice with this kinda thing? I know I just need to work in my confidence and self-love, but I also want to get opinions from others.

Thanks