"It’s been so difficult to watch this unfold over the past year or so. Selena has shed so many tears over Justin," showbizspy.com quoted a source as saying. "She’s tried to split up with him so many times but they have always ended up back together. "It’s out in the open now and that is one of the toughest parts, so that means there’s more chance it will be permanent this time. But we expect Justin to try to win her back - and he tends to get what he wants," said the source.