I think Simon and Alisha will be good for each other. Alisha will show Simon how to loosen up. Simon will bring Alisha down to earth once in a while. They ~complete each other~
And I sort of want Alisha's memories to be erased. That way the build up between her and Simon will be more organic. Right now she likes him because he can touch her and because he told her they fall in love. It's hard not to fall for someone then.