'Roar' beauty Katy Perry has revealed that she's cautious when penning tracks about her personal life because she understands the impact her career can have on those closest to her. 

During a new interview with Iggy Azalea for MTV, Perry confessed that she never wants to immortalise ex-boyfriends or former lovers as "villains", so has to be careful in her songwriting:

"Well I never try to make people out to be villains, too much. There's a lot of empathy in my writing, even if there is pain and sadness. I think that I'm not always trying to point the finger. I think on this record, the whole 'Prism' record, it's very self-reflective and you hear that I've kind of gone inside more so and looked at where I can make myself better, did a patchwork thing, rather than like 'Screw you. You're crazy. F**k you.'"

She went on to talk about one track in particular and how it embodies her approach to relationships: "There's one song on the record called 'It Takes Two', which is about specifically that. Because it's really easy when relationships end to be like 'That guy was a f**king douchebag.' But really if you laid it down, and you saw the whole span of the relationship, you saw that you were in love."

“You saw the intimate moments, you saw the pain, you saw all the emotions and you have to kind of say 'Well, what responsibility can I take for myself in all of this?' Well the thing is; it's either 'screw the guy' or like 'I'm so strong now.' I'm like 'Yeah I'm strong now, but I was in bed for two weeks. It sucked. I mean it's a realistic approach."