So here is the thing, I have been with my girlfriend for a year now, and we planned our lives, our future together... and her ex, keeps asking her to go back, and her parents do not understand our love...
So please give me suggestions, because she is all I got, I don't want to lose her, not after what we have all been through...

First of all let me start by saying that basing your happiness on someone else is a very bad habit, one that I have practiced myself in the past. If you base your happiness on you, no one can take it away, so keep that in mind. Now what is all that about her being all that you have, is she really all that you have? You have yourself!! And dude, has she made any decisions yet? Because whatever she plans on doing is what she will do regardless of what you do. So for now, all you can do is keep your fingers cross that she loves you as much as you love her. But use this as a wake up call that you your emotional bind to this person is way too high. Control your emotions, and act like the guy she is in love with, nothing has happened yet so keep your cool, don't worry about potential problems worry about stuff that is happening not that might happen!

Good Luck,

Javi

Thanks man I really appreciate it, and you she says that she loves me and want to be with me, but the people around her are saying otherwise...

Don't do anything unless something actually happens, that is all that I am saying. Why are you stressing about potential situations? And it doesn't matter what people say, not even her, is what she is going to end up deciding that does, so just wait until she makes a choice. It would be wise to expect the worse and hope for the best, a mentality that will protect you from being devastated. And also, if you feel like you are going to be "lost" then you need to start finding a life apart form her now, even if nothing happens and you and her stay happily together, always have your own life apart from the life you have with her. It is very important to your emotional well-being in the long run of any relationship.

Good Luck,

Javi