Lyric discussion by 60_miles_an_hour 

Cover art for The Longest Wave lyrics by Red Hot Chili Peppers

Definitely about his two-year relationship with Aussie model Helena Vestergaard, that ended late 2014?

"Throw me all around Like a boomerang sky" References her Aussieness.

"Under my skin And half my age" Helena was aged 19-22 when they were dating.

A few other songs from The Getaway mention Helena... I feel like this relationship really affected him, and therefore influenced him lyrically. Makes me feel a bit sad to be honest lol.

He said this in an interview: “Lyrically, I’m embarrassed to say, a 2-year relationship that completely fell apart like a nuclear bomb, just left me feeling pretty raw and available to the emotional universe for writing. So even though the relationship was a bit of a disaster, I feel that in some way, I did get something out of it, which was about half the songs on this record.”

My Interpretation