I was prepared to give this the benefit of the doubt...but after watching the video...no no no no no.
Rushing in at the exact moment she's receiving her diploma, not even giving her that second and then the continued waving and grinning at the crowd. He really has made it all about him, hasn't he?
Her body language is demonstrating she's not enjoying it one bit - maybe that's just because she was embarassed in the moment. But if you told me he wasn't even her boyfriend and actually just the stalkerish guy who has been pursuing her all through university and who has staged a final dramatic gesture before he loses her forever, I wouldn't feel entirely shocked.