what I have seen I felt sincere and like they were both making reasonable choices in the relationship.

Yeah. I can't actually understand what she's meant to see in Rodney, but leaving that aside, they seem pretty happy together. I just wish the show hadn't had a romantic sub-plot, though at least it was Rodney and not John, so the John/Rodney people have to worry about breaking it up, rather than us John/Cam people :o)