Singer Lana Del Rey has blamed her battle with "depression and insecurity" for ruining her relationship with rocker boyfriend Barrie-James O'neill.

The couple recently split after three years together, and she was spotted with a new man, photographer Francesco Carrozzini, on a trip to Italy earlier this month (Jul14).

Del Rey has now opened up about the breakdown of her relationship with the former Kassidy star, blaming herself for "demolishing" the romance.

She tells America's Complex magazine, "(I destroyed) the relationship I've been in for the last three years. Definitely demolished that through tons of depression and insecurity. Now it's just an untenable relationship, impossible because of my emotional instability... I am a little f**ked up. This whole experience has f**ked me up... It's been hard."

Del Rey goes on to admit her emotional problems started following her rise to fame, adding, "I was in a good place when I wrote my first record because I wrote it for fun, but then I felt like everything that went with the record was heavy. I was also trying to deal with stuff with my family. The world was heavy for a couple (of) years."