Steven: 'Lower class to blame'.
In explosive revelations in his first television interview since the 19-year-old model split with the singer, he has claimed he was never good enough for Maria.
Channel 4 documentary Fallen Angel, which is to be screened two days before Charlotte turns 18, charts the Cardiff girl's rise to fame and portrays ambitious mum Maria as the driving force behind the relationship breakdown with Steven.
In the hour-long film, former DJ Steven - who was raised in Butetown, Cardiff - talks about his love for Charlotte, his feelings of hate towards Maria, and denies that he ever tried to sell stories of the couple's sex life to the tabloids.
Steven says: 'Maria used to say (to Charlotte), 'We've come from a lower class and moved to upper class and now you're going out with someone from the lower class'. It's no good.'
He also claims Maria wanted Charlotte to marry someone more like Prince William.
'I'm sorry, I'm not Prince William. I'm Steven Johnson,' he says.
Of the split, which happened in November, 2003, he says: 'It just came to the end of the road.
'We had a great time together but too much things got on top of us. So we just let it go.'
Others interviewed in the documentary, include Charlotte's step-sister Elisha, the singer's former manager Jonathan Shalit and Steven's sister Soraya.
The Church family were approached to appear themselves, but declined.
Maria Church dismissed the programme as 'farcical' because she said they had only interviewed people with grudges against Charlotte.
Fallen Angel will air this Thursday on Channel 4 at 9pm, and on S4C an hour later.