Evan, the main concern that adults have when they see "young love" is that the participants of that love may not be mature enough to comprehend a number of realities. CAN young people be in love? Yes, I believe they can. Can such a love blossom into a true, life-long commitment that lasts over the decades of our lives? Yes, it can. BUT, it's extraordinarily rare for it to do so.
I wouldn't dream to presume if the two of you will last into adulthood and beyond, but I DO know the odds are severely against it...for many more reasons than just the ages you've listed.
Genuine commitment...the sort that takes you through ANYthing...even the loss of the "feelings" that are so potent right now...takes a great deal of maturity. You haven't exactly inspired confidence in your audience that you have that kind of maturity.
Fortunately for you, it doesn't really matter what anyone here thinks or says. Your reality is your reality, no matter what we say. But some of us TRY to say a few things that we HOPE might help you to think with a little more clarity and introspection. Only when you're willing to face the realities of the world, will you be able to overcome them.