There's no description, so it's not clear on where or when this took place, but basically a dude sings a romantic song to a VERY uncomfortable-looking woman, and then proposes. Skip to 1:50 to see him down on his knee.
The look on her face should be enough for anyone to re-think their proposal, but the guy just keeps going. There's a woman in the background yelling Don't embarrass him!, but the uncomfortable woman stands her ground. They have a conversation that I can't hear, but I see her saying: I can't, and You can't fix this.