Actually I think Krycek and Marita would be so cute living in suburbia with little Marikrycek babies and going to neighborhood barbeques LOL I think they deserve a happy ending after all they've been through.
I'm so kidding, I can't tell you how much I'm kidding about what I typed up there. I agree that Krycek and Marita wouldn't have a happy ending romance. I also think that they used each other within the Syndicate - I base that on the fact that after Marita and Krycek nearly wall-f*cked each other in "Patient X", went off somewhere else to finish the deed, that as he slept she got up and took Dimitri from him. I think Krycek was the one beginning to think that he and Marita no longer were using each other, which is why he was so angry when he realized he had been screwed over in more than one way.