That being said, apparently, Liam did expect Miley to simmer down somewhat, and instead, she did just about everything to draw attention to herself (apparently Liam had said that she needs to have 'constant attention' and likes to 'always be in front of the cameras'). He didn't like the licking his face, the twerking, etc. - that she was constantly doing at public events.
Like others, I had thought that she had finally matured a little more, but I guess not .. so, I can't blame him for saying "enough"! Agree that he will likely get scooped up pretty quickly by some other woman; he obviously wants to truly settle down and start a family. Miley is still a train-wreck in my opinion ..