Why did you say yes to his invitation?
Why did you take his calls?
Why did you call him back?
Why did you go out with him?
Why did you sleep with him?

Why did you cheat on me?

Don't you 'IT JUST HAPPENED' me.

Now i get a gun and i am going to blow your head off, mutilate you and bury you somewhere far away deep in a forest.... So far that i won't even remember where i have buried you. And then i'll turn myself in to the police. And when they ask me all those why's i'll be so happy to say 'IT JUST ****** HAPPENED'.