IMHO, there is so much about Irina (and even Jack) that we don't know at this point. I still believe that these two love each other and even though they may not ever have a "normal" relationship because of their circumstances, I do think the possibility exists for the hurt between them to heal and for them to understand each other. I also think that it is eventually possible (if LO stays on for several more seasons) for them to have some semblance of a relationship. Of course this assumes, that Irina has a reasonable explanation for her actions, which I believe is still quite possible at this point. I think that this is a complex relationship and we will have all kinds of twists and turns with these two.