Here on this If A Broken Heart Could Kill chords page you'll find my acoustic guitar demo, purchase link to the full lesson, the lyrics to the song as well as a free .pdf to the If A Broken Heart Could Kill chords sheet you can download.
This song hails from the 1984 album from Keith Whitley called "A Hard Act To Follow". The album did OK with two singles at #59 and #76, but the success of keith Whitley was still a few years off before his death in 1989.If A Broken Heart Could Kill
For this song you'll want the capo on the 4th fret if you want to sing this in Keith's original key, which in this case is B. Here are the chords you'll need for this one.
A pretty simple four chord song with a basic root up down up - root up down up rhythm pattern. As you'll notice when you watch the demo, there isn't any lead break in this one, but you could put one in if desired.
What I would do is simply follow the melody of the verse. You could work it out quite easily and then fit it in where you see fit.