Colorless Rainbow

Denis Escobar is an engineering student, one day his path bumps into a man named Frank, they get to know each other,they have faced many problems together.They are happy with each other but they did'nt know what is in them.As time goes on, their relationship deepens, but there is a big secret that will startle Denis, a secret that can be broken their friendship, can their deepening relationship continue? can one forgive the mistake? or will the other fight to be continue their relationship,or it will be just a friendship?Is denis will give up?Are they two will seperate ways to find their own happiness?