Selena Gomez `terrified` to trust Justin Bieber?

Selena`s cool with Bieber hooking up with other women.

London: Singer Selena Gomez is reportedly "terrified" about trusting ex-boyfriend Justin Bieber again after the pair were seen getting close.

The 23-year-old "Same Old Love" hitmaker is not sure Bieber, 21, will be "exclusive" with her, reported Female First.

"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," a source said.

"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."