I'm Still Breathing Lyrics

Lyric discussion by Reevys 

Cover art for I'm Still Breathing lyrics by Katy Perry

I think this song is about a girl who is in a failing relationship, and is about to end it because she is ignored or taken for granted by her boyfriend, or possibly even cheated on.

The first half of the first verse is her getting his attention. The second half of the first verse is her talking about the break up fight they're most probably gonna have ("Say something funny, say something sweet" is most probably meaning the point in the fight when the guy tries to get the girl to calm down by making jokes or complimenting her).

The second verse is her trying to figure out the reasons her boyfriend is being more and more hostile and reclusive.

And the chorus is her saying that there relationship is doomed, and i's best they end it now before it becomes much worse, such as her killing (as hinted at by the various suicidal activities mentioned in the first verse).

That's what I take it to mean. I may be totally wrong however.