Personally I don't think you need to tell him "I think your too fat" in any way, shape or form.
I think you should just say that you consider him to be a good friend, one that you wish to visit when you go to Australia (unless your staying with him, in which case I would say something like "I really appreciate your accomodation whilst I'm visiting the COUNTRY").
Make the trip less about your relationship and more about the cultural, visiting aspects, perhaps this will lead him to realise that it is a FRIENDSHIP you have.
I don't think your being shallow either, many people think that way, if there is NO physical attraction then it would be hard to develop and maintain more than a friendship, everything in our behaviour and interactions are based on presentation and physical attraction to some basic extent.
I really hope you manage to figure this out in the easiest way for both of you and that neither of you end up hurt.
I think you should just say that you consider him to be a good friend, one that you wish to visit when you go to Australia (unless your staying with him, in which case I would say something like "I really appreciate your accomodation whilst I'm visiting the COUNTRY").
Make the trip less about your relationship and more about the cultural, visiting aspects, perhaps this will lead him to realise that it is a FRIENDSHIP you have.
I don't think your being shallow either, many people think that way, if there is NO physical attraction then it would be hard to develop and maintain more than a friendship, everything in our behaviour and interactions are based on presentation and physical attraction to some basic extent.
I really hope you manage to figure this out in the easiest way for both of you and that neither of you end up hurt.


















