I watched II today. I noticed that in the final scene where Michael is sitting alone outside at his compound he is wearing a wedding ring.
That doesn't surprise me, and I actually find it quite in character for Michael. All of his hopes and dreams for the Corleone family - that fruitless quest for legitimacy - were all tied up in Kay and her WASPishness. She brought him that genuine Ivy League, descendant of the Mayflower quality that he so badly wanted for the Corleone Family. I can see him desperately clinging to that dream.
