HL is at it again with baseless rumors. I heard a rumor on a MSG board awhile back that Demz and Logan were under the mistletoe during xmas.
If they are dating, Logan is still a far better choice than Wilmer.
Just like Joe Jonas these two go back to Acting class that was run by Logan's mother, I also fear that in the end, her issues such as ED's and cutting will be a challenge for her. That is why do not see her really settling down with a man until she is 25. Even someone Logan's age does not have the experience to deal with someone who is Bipolar etc.
Also if you read her interviews she wants a man on her beck and call, He might leave if his career really takes off and she wants to crack the pussy whip on him, while He wants to be a free wheeling rock star.