You don’t have to be engaged or even have a significant other to be considered a success on graduation. Heck, you don’t ever have to get married to be considered a success. The definition of success varies from person to person. As Einstein once said “Everyone is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.” There is no reason to force a definition of success on yourself that isn’t applicable to you.
Here is a Meredith College specific list of things to remember during graduation day, engaged or not: 5 Things To Remember When You Lack An Engagement Ring On Graduation Day
The World is Your Oyster 