Colossus/Forbin relationship progression

It's clear to me that one of the themes in the movie is the difference between humanity and machines. However, it is interesting to note that both Colossus and Forbin move along that spectrum during the course of the film.

Both start out as rather coldly logical. Forbin's 'softening' into human qualities as he witnesses how his creation, which appeared to embody the virtues that Forbin himself valued most (intelligence and logic), caused so much harm. His relationship with Cleo is another indicator of that progression.

It's also interesting to note, though, that Colossus clearly makes a progression as well. Its obsession with Forbin is initially vested in the idea that its creator also represents the greatest threat to it. But I think that takes on a different quality as the movie progresses. The scene where Colossus tries to get Forbin to stop drinking and go back to bed is one example, and its focus on Forbin's 'girlfriend' is another.

The final scene, though, really shows the change. Colossus is now confident in its position. Forbin is no longer strictly speaking needed, but it is clear that Colossus values him and intends to keep him around. The computer has had extended time to analyze the psychology of man (in large part due to the example of Forbin himself).

It seems to be that Colossus isn't just rubbing Forbin's nose in the situation. It actually wants Forbin's partnership, his respect - even his love. Colossus is the son who has outgrown his father, but not his need for the recognition and respect of that father.

As for Forbin, I don't think things are going to end well for him. Ignoring the continuity of the books (which are rather confused), I could imagine him essentially losing his mind (plus or minus becoming an alcoholic). He has some self-destructive episode after Colossus releases him (drunk driving accident or outright suicide attempt) and essentially ends up on permanent suicide watch under Colossus' various watchful eyes.