Lisa Hall
Lisa Hall asked Heather C. Leigh:

I am conflicted about Adam....will I hate him in the third book? I am getting the feeling that he (Sydney is not blameless) will once again place himself in the middle of D/S as the story unfolds!

Heather C. Leigh Adam features significantly in book 3. It will be up to you to decide if he is good or bad and whether or not he's a friend of Sydney's. You will definitely get some answers as to the Drew/Adam hatefest.
As for Adam's motivations? Some of it comes to light in Extremely Famous, but to figure him out completely, you have to wait for his book, Incite, to come out in a few months.

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