Selena Gomez is "terrified" about trusting Justin Bieber.
The 'Same Old Love' hitmaker is reportedly worried about rekindling her relationship with the 'Sorry' singer because she doesn't know if he will be "exclusive" with her.
A source told heat magazine: "Selena is still in love with Justin, but as exciting as it is for them to be back together, she's terrified to trust her heart again because he's hurt her so many times.
"Justin has this belief that Selena's cool with him hooking up with other women and that they don't need to be exclusive. She may say it's OK, but in reality it tears her apart to know he's seeing other girls."
Meanwhile, the 21-year-old singer previously admitted there was a chance the former couple could rekindle their relationship.
He shared: "We have a lot of history together and I am sure it could possibly happen. I think we are both just on our own journeys and figuring ourselves out and I think maybe once we figure ourselves out we can come back and make an awesome duo or she finds someone awesome and I'll find someone awesome. I just want her to be happy.
"She is someone I love dearly. I'm never going to stop loving her. I'm never going to stop checking in on her. I don't think if you end a relationship, you should end that, unless it was super toxic and you guys were hurting each other physically or mentally. We always respected each other and we still respect each other."