From dogwalkmusings.blogspot.com
It's not uncommon for me to get emails from people who say that they want to live in Peru forever. It's usually accompanied by statements saying that someone (their husband / wife / partner / boyfriend / girlfriend / fiance / fiancee) is living in Peru / going to move to Peru and they'll get married and live happily ever after. More often than not the person emailing me has never been to Peru or has spent less than two weeks there.Keep in mind that marriage is no longer forever. Divorce rates are high enough between people from the same culture let alone those from different cultures. The good news is that there are alternatives to residency besides marriage.
One tip to remember is that speaking Spanish will help you greatly. You'll be treated differently than if you speak English all the time, it'll help you assimilate, and you'll be able to communicate easier. If you're looking to learn Spanish, the two programmes I recommend are Synergy Spanish and Speak From Day 1.
Upping sticks and moving anywhere is complicated. It can get harder if you don't speak the language or if you don't have a job waiting for you. More often that not people end up begrudgingly teaching English. While there are other options than teaching English in Peru, they do take time to set up.
While there are plenty of people that do end up living in Peru forever, just remember to keep your options open. Don't limit yourself to one country. Take things in stride and realize that there are many things beyond your control.