Mercedes leaves New Directions in "Asian F" because she feels like Rachel always get the spotlight and she (Mercedes) wanted to have more solos.
Funk
Laryngitis!
Laryngitis,Season 1/Episode 18
Express Yourself by Madonna is featured in The Power of Madonna, the fifteenth episode of Season One. It is sung by the New Directions Girls, with solos from Mercedes, Quinn, Rachel, Santana, and Tina.
There is no episode on Glee that is named "You Do". However, there is an episode on Glee that is "I Do". S04E14
Mercedes and the New Directions sing Christina Aguilera's song "Beautiful" in episode 16 season 1titled "Home".
Funk
episode 3 "Acafellas"
Laryngitis!
Sam Evans is dating Mercedes on Glee, they even show them holding hands at the end of episode 22 in season 2.
Laryngitis,Season 1/Episode 18
Express Yourself by Madonna is featured in The Power of Madonna, the fifteenth episode of Season One. It is sung by the New Directions Girls, with solos from Mercedes, Quinn, Rachel, Santana, and Tina.
Singles: "Bootylicious" (Jane Addams Girls Choir), "Papa Don't Preach" (Quinn), "Hair/Crazy in Love" (Mercedes and Artie with New Directions), "Imagine" (New Directions), "True Colors" (Tina with New Directions)
The episode is called Hold On to Sixteen.
I'm not sure but the first person to know in the glee club is Mercedes who is told by Puck (Noah)
There is no episode on Glee that is named "You Do". However, there is an episode on Glee that is "I Do". S04E14
Mercades did like Kurt in episode accafellas but then Kurt told her he is gay