Time to download the I-129f and it's separate instructions. Read carefully, then interpret literally. You will see nothing about the length of your relationship in those instructions or requirements. Believe the official sources, not misinterpretations by others. As you've been told above, you need (as a minimum) evidence of being together in person sometime during the last two years. If your last in person meeting was more than two years ago, no go. If you haven't met in person yet, no go.