That would have made a helluva lot more sense, but the writers clearly wanted to focus on "what came next..." as far as the Island adventure went....even though they could have written it so that Tea had already secretly had Todd's baby, while everything else that happened with Ross still did. The two of them (Tea and Ross) could have still married, and Ross could have still been depicted as having taken on the role of Dani's father (legally adopting her.) *shrugs* But RC wanted a complicated, convoluted story, and so that's what we got.