Momo and Nana suggest composing the student council's responses to requests for romantic advice found in suggestion boxes as short stories in the "Love Lab Correspondence" of the underground paper.
You should tell them and 
apologize before it's too late.
Deberías decirles y disculparte 
antes de que sea tarde.
Deberías decírselo y disculparte 
antes de que sea tarde.
Tu ferais mieux d’avouer 
et de t’excuser
Você deveria as contar e se desculpar
 antes que seja muito tarde.