The singer, who once dated the music mogul and is godmother to his and Lauren Silverman's four-month-old son Eric, insists he can still be ''crazy'' at times but he is more relaxed these days and is showing his softer side.
During an interview on 'This Morning' today (26.06.14), Sinitta explained: ''He has - I won't say mellowed - because he is still naughty and crazy, but he's just very open, very tender. I'd always known that side of Simon anyway, but everybody else is getting to see that now.
''He'll say soppy things and then apologise and say, 'That was a bit soppy' and then go, 'Oh, who cares'. It's really sweet.''
Sinitta admitted she loves watching her friend dote on his son because they are so transfixed with one another.
She said: ''Eric has blue eyes, dark hair - amazing. Simon is very tender [with him], he's fascinated ... he literally holds him and stares at him and sticks his tongue out and Eric will imitate him back. I'm fascinated watching him with Eric.''
Sinitta previously admitted that she felt hurt and betrayed when she first found out Simon was going to be a father but she insists her feelings have changed and she has come to accept it.
Sinitta - who had a termination when she was dating the 'X Factor' boss - said: ''We all survived and we're all happy. Eric is adorable and I'm godmother to Eric as well so that was lovely and I think like all good friendships, we've just kind of weathered the storm and kept going...''
When asked if Simon has mentioned having more children with Lauren, the mother-of-two said: ''He has actually! Not to me, Lauren said that he wants more children - he wants a little girl next so we shall see! Its nice to have two.''
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