"It Won't Be Long"

A couple days ago, I learned some of the guitar phrases in "It Won't Be Long."  I was thinking about the song again this morning, and I realized something about this section:

Since you left me
I'm so alone
Now you're comin'
You're comin' on home
I'll be good like I know I should
You're comin' home
You're comin' home

I'm not sure I have the line breaks in the right places there.  The Beatles Complete Chord Songbook renders this section as:

Since you left me I'm so alone,
Now you're coming, you're coming on home,
I'll be good like I know I should,
You're coming home, you're coming home.

I went more by where John Lennon takes breaths when he sings it (The Beatles Complete Chord Songbook evidently considers some of those caesurae).  Either way it's formatted, what I realized still stands:  there's internal rhyme in the line "I'll be good like I know I should," which - to some degree - illustrates the perfection of character that the narrator says he'll attain.