You mean <em>"Why do [some] </em><em>people</em><em> cheat in relationships?"</em>
Well an analysis revealed eight key reasons: anger, self-esteem, lack of love, low commitment, need for variety, neglect, sexual desire, and situation or circumstance.
<em>Or the world is and humans are just terrible LoL</em>
Answer:
虐殺の背後にある男.
Explanation:
It's been so long,
Since last I've seen my son,
Lost to this monster,
To the man behind the slaughter.
Lowkey my fav. FNAF song
C. hunt for info, but you also might want to clear up the question?