The pair have been spotted on numerous occasions, even hanging with her BFF Kendall Jenner.
Fans are speculating whether or not the two are dating, because on more than one occasion the pair were spotted walking around hand-in-hand, and even Bella's arm slung around his shoulder possessively.
The Daily Mail has all their PDA pics, so you can come up with your own conclusions after seeing those.
Of course, they could just be friends, but we'd love to see Bella happy and in love again!