Reo used to have a girlfriend.. he very loved his girlfriend, but they finally broke up because the girl cheated on another guy. When Reo felt his life was destroyed.. you came like a light, you helped him rebuild his life. And finally you were dating him.

However.. one day the girl come back to Reo. Reo looks at you with guilt "Let's break up. She has come back.. sorry I chose her more than you."