Garth Brooks - The Thunder Rolls Lyrics Meaning

Whenever I hear this very deep and philosophical song, I think of the video -- a man (played very brilliantly by Garth Brooks) comes back home (probably from having an affair, hence the lines "he's heading back from somewhere that he never should've been" and "on the wind and rain a strange new perfume blows"), and his wife confronts him about having cheated on her. They fight, and the wife gets a pistol and shoots her husband dead (the long version, which Garth plays live, has a fourth verse). The fourth verse is as follows:

She runs back down the hallway
and through the bedroom door.
She reaches for the pistol
kept in the dresser drawer.

Tells the lady in the mirror, 'he won't do this again'
'Cause tonight will be the last time
She'll wonder where he's been

In the background of the song, there's the sound of thunder, lightning, and, at the end, rain falling.

I think this song is beautiful, and very well-written. I like it a lot!