It is a little confusing. The writers (for the most part) have portrayed Adam as a psychopath and therefore incapable of love (or falling in love)and completely lacking in empathy. This would not stop Adam from lusting after Sharon, lets face it shes still pretty hot as long as she keeps those big ears of hers covered. The confusing thing for me was that Adam seemed genuinely remorseful about causing Ashley's miscarriage, even though there was no one around to witness his "acting". Oh well, I guess personality disorders aren't always black and white, and in "soap world" this is most certainly true.