It’s always a list of pros and cons.
I have no idea why you left Europe. If you just left out of wanderlust but were fine with Eastern Europe, then the “only” factor keeping you in Australia (not trying to minimize his importance, just a manner of speech) is your boyfriend.
If you moved to Australia because you had other issues with Eastern Europe, be aware that they are very likely to still be there if you move back, and what you are experiencing is just a fit of nostalgia.
All in all it really depends on how you see long term prospects for your relationship.
Pro for the US:
- You can make a lot of money… If you are willing to put up with the toxic work culture
- They have good mexican food
- The wilderness they have. Very jealous of that.
Cons:
- The rest
Cons for “Europe” (I am from here, no need to tell me it’s not a single country xD)
- They do not have good mexican food
- You make less money than in the US (though - in Luxembourg and Switzerland you can make bank)
Pros
- The rest