You will Watch The Grim Adventures Of Billy and Mandy Season 6 Episode 3 online for free episodes with HQ / high quality. Stream cartoons The Grim Adventures Of Billy and Mandy Episode 63 The Love that Dare Not Speak Its Name: When Billy decides he wants to grow up to be like Grim, he says nothing will stand in their friendship. Then, they meet a girl named Blandy, who looks very much like Billy, and Billy falls completely in love with her. However, when Blandy shows romantic interest in Grim, Billy is struck with mad jealousy and wants Grim out of the picture. Then, Mandy consults Grim’s encyclopaedia of monsters and realizes Blandy is actually a creature from another dimension. In the end, despite Blandy showing her true form and leaving,Billy remains madly infatuated with her; but only up untill the following episode.