The 25-year-old singer's relationship with the Good Charlotte guitarist ended in 2012 after around a year together and two of the songs, 'No Man Can' and 'I'm in Love With You (In Your Hands)', on her upcoming LP allude to the break-up.
She said: ''It's a journey from before I was with someone to when I was with them and then afterwards. The songs that came from the break-up definitely fuelled things in me. I was writing constantly, just getting it out of my system.''
Although her failed romance with Benji - who previously dated Paris Hilton, Sophie Monk and Holly Madison - has inspired some of her latest music, she insists her next record is not a break-up album like Adele's '2'1 or Amy Winehouse's 'Back to Black'.
Eliza - who is due to release the album in October - explained: ''It's not a break-up album, though. Maybe the break-up triggered it but it's really about discovering things about myself I didn't know before.''
Without giving away any spoilers, both the British actors hinted that season seven of 'Game of Thrones' would be eventful, shall we say.
Depp cut the first installment of cheques in his divorce from Amber Heard, sending them directly to the charities she named.