The Not Fair hitmaker announced in 2016 that she had filed for divorce from Sam following a year of speculation, and officially finalised the process earlier this year.
Lily previously revealed she had considered turning to heroin when her marriage broke down, but instead used sex to "fill the void".
She said: "I was so sick, I said to my therapist: 'Maybe it is time to try heroin.' I know heroin is really the end of the line. But I have toyed with the idea before.
"Instead, after I got divorced, I kept having sex with other guys to fill the void. I was totally out of control."
Meanwhile, Lily's dad Keith - who split from Lily's mother Alison Owen when she was just four years old - recently revealed he's worried about what the singer might write about him, because she's been critical of him in the past.
He said: "Listen, man. I'm not made of steel. But I have read stuff that Lil's said about me [previously] and I've thought, 'Really? Hang on a minute. That's not my memory, not quite.'
"But, you know, it's tricky, and it will be tricky...Because like I say, me, in her eyes, abandoning the family, is a big thing."
-Bang! Showbiz