Jason Derulo's single 'Marry Me' is one of the most romantic tunes of the past year, and its official video showing his intimate moments with GF Jordin Sparks was both sweet and sexy. So why is everyone laughing?

Well, for one, because the tune has also become the soundtrack of a compilation video showing the funniest wedding fails. Brace yourself for wardrobe malfunctions and face-plants galore, as well as the most hilarious flower-girl meltdown of all time (you'll know it when you see it).

We'd feel guilty about our reaction to the moment at 0:52 if we weren't laughing so hard!