Sure Alexis was always a bitch but some things she did for reasons like being really hurt by someone. Her enemies did their best to bring her down and I belive that what she really wanted was to defend herself from the nasty fact that she had very few, to no friends. On top of that, most of her "friends" abandoned and deceived her f.ex. Galen, Sean Rowan and Dex of all people..
Somewhere, behind the cold exterior Alexis must miss not being liked, not that she did much to become liked but then again, she probably didn´t know how to.. It´s a bit of a bad cycle I suppose.. No one really gave her a chance to be nice, exept for Blake, after Singapore, perhaps.
As for Singapore, I don´t think she wanted to seduce Blake. If she had really wanted to, she would have found a way, believe me!
No, I think she desperately wanted Blake to forgive her her for the take-over of Denver Carrington and the mansion, throwing the Carringtons´ into the street, baby Krystina and all.. All of that was more Bens´idea, rather than hers..
I love Alexis and refuse to believe that she´s all evil.. I wish she would have taken Dex up on his offer to take her to Wyoming, maybe she would have found some peace of mind to actually consider settling down..
Imagine that!! Alexis settling down somewhere with Dex. In a real home, with lots of space for Rheo to roam around!