Justin Bieber is ready to be a dad

Los Angeles - Justin Bieber wants Selena Gomez to be the mother of his children.

The 20-year-old singer reportedly wants to start a family with the 22-year-old brunette whom he has been dating on and off for four years, and wouldn't be upset if she got pregnant soon.

A source said: "They have a very romanticised and immature idea of what it means to have a child. When they first fell in love, they promised each other that they'd be parents one day, and Justin still says he wants Selena to be the mother of his children, especially when he wants to make her happy.

"They're rolling the dice, because they think whatever happens is God's will."

But friends close to the couple think their turbulent romance is toxic.

Another source told US OK! magazine: "They're so irresponsible when they're together. Every time they start seeing each other, they make all kinds of declarations of love and talk like they're going to be together forever.

"But their relationship is dangerously toxic, and they're the only ones who don't realise that."