Demi Lovato was on Alan Carr: Chatty Man to promote her latest single Cool For The Summer. Alan Carr asked her about the explicit lyrics of the song and she responds at 3.10:
Demi: "I am not confirming and I'm definitely not denying. All of my songs are based off of personal experiences. I don't think there's anything wrong with experimentation at all."
Alan: "No. The trouble is i experimented once and it stuck"
Demi: "Hey, I didn't say that it didn't stick either. I didn't say that it didn't stick ."
They go on to talk about how male popstarts don't sing about experiementing with same sex partners.
If you don't remember the Ruby Rose thing then here's a link to a banned source. Ruby pretty much outed Demi in 2013.