"The tough life is easier when I have you around," is the exact thought Ren and Kyoko have each time they're together. In their hardest time, they find ease in each other company. When they are together, they are INVINCIBLE.
they say, "take your chances now, since you cannot take that wasted time back." well in this case, two soulmates love each other, secretly from behind, not having the courage to confess. when they finally realize their feelings for one another, it's too late. everything has already happened, and you cannot turn back time.