Justin Bieber and Selena Gomez in 'trial relationship'

Justin Bieber and Selena Gomez have reignited their romance but for a "trial period."

Gomez has insisted that this is not a permanent arrangement as she is afraid of getting hurt again., Contactmusic reported.

A source told HollywoodLife.com that the on and off couple is dating but they are taking things slowly.

The source insisted that the couple has years of experience and this time they are treating the relationship more maturely as they now know what the stakes are.