Susan's got the idea here LJ, I don't myself have a lot of comfort with the word incompatible, as this is wayward script as well, but when an extended affair is going on (non-one-night-stand type of deal) an addiction begins to build in the WS.
Once that addiction is in there his head is a BRICK WALL.
All his actions will be to pursue and increase his exposure to his addiction.
Any attempts to persuade, argue, convince, cajole, or charm him into changing his mind will fall on his brick-laced ear drums.
And YOU are on egg-shells the whole time beucase
if you do ANYTHING to pressure him - his guilt is washed away by the apparent incompatability between the two of you - he is convinced you two aren't "meant to be together"
if you just let him to what HE wants and leave him alone, you will get ILL watching him hurt you over and over again
Its a terribly painful situation... not at all what hollywood tries to show you in the movies is it?
