Just wanted to point out that I ' m from Perth , WA and my SO was originally from OR ! But he ' s now in Indiana . I ' m currently 21 and my SO is 25 , my K 1 interview is next week . As far as I know , age seems to not be an issue . I ' ve never heard any cases of it being so , so I wouldn ' t worry at all . As the other poster mentioned , the only thing may be the cost of the visa and income requirements for your I 134 F . Filing the visa has also gone up in cost I think it ' s effective early December . I ' m not sure what the cost of a partnership visa for Aus is , but be aware that it ' s still not necessarily cheap to do there are all sorts of fees to pay , just my medical exam cost $ 570 AUD and I was lucky enough to not need any vaccines , or else that would ' ve cost extra .