"She'd get up in the morning almost before crack of dawn to make sure she was out of bed and putting make-up on and got back in bed with a full face of make-up on. So I used to look at her and think she woke up like that but she was pre-prepared and got up in the morning.
"That again was purely her insecurity to not having make-up on which is why she doesn't really go out in public without make-up on at all. She feels more comfortable as a human being with it on."
But the former 'Love Island' heartthrob loves seeing the 28-year-old pop star in her natural state so much that he's got a picture of her without make-up on his fridge.
He said: "I love it because that is her and that is her with a fresh face. No make-up."
And Chris is always trying to compliment her to boost her confidence.
He said while speaking to her and the camera: "Your eyes are like golf balls. Beautiful. She's got a model jawline. She's got fantastic lips. Her eyebrows are brilliant. Her forehead. Everything about her. And you've got good ears."