G'day Aussie girl,
I am an Aussie bloke, married to a Peruvian lady and now living here in Lima.
I have been married for 12 years and we lived in Oz for the 12 years..and then decided to come live in her counrty...just as a background/experience scenario for you.
From all the info I have gathered from my missus over the years, Peruvian fellas are not unique in being "butterflies", but they are very good at it....and from what I have read in your initial post, mate, you've got a butterfly in your net !!
I am tempted to say "treat it as a holiday romance " only...but I cannot presume to tell you what to do, eh?...but it happens...you may believe that, as I was an Aussie sailor for 12 years and left many a "teary eyed" girl in various ports....who were just looking for an escape to Oz....me suspects maybe same for you.