Viral Video: Graduation wedding proposal

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WASHINGTON -- American University graduates marched across the stage to get their diplomas ...and to start a new chapter in their lives.

Little did Sarah Cooper know how drastically her life was about to change!

As she got her diploma, her boyfriend Sam stepped out onto the stage. She looked at him like 'what are you doing here?' He said, "I have a question to ask you." He got down on bended knee.

He asked his question, and she nodded, "Yes."

He says as their relationship in college grew serious, both families urged them to wait until graduation to get married.

He graduated the day before she did.

Sam Miller says he couldn't wait another minute for her to be his fiancé'.

So he presented the ring Monday, as soon as she had her diploma in her hand. No word on when the newly engaged couple will get hitched.