The obvious pairing for Chase is Nelle, as a kind of "you-are-bad-but-I-can't-quit-you" type thing. As people have said upthread, it would be a small matter to retcon that Nelle didn't kill her fiance in the canoe - maybe Nelle didn't deliberately sabotage the canoe, just failed to take some safety measure and therefore believes she was responsible, or she was tricked and set up - and the truth coming out draws Chase back to her side.