Fridge Horror: Jordan and Lincoln eventually escape their pursuers and live happily ever after... meanwhile Jordan's real-life double had a young daughter that is now an orphan. "Mommy, when are you coming home?"
Doesn't make it that much better, but it's reasonable to assume that a well-known, wealthy movie star would have had some way set up to take care of her daughter if something happened to her—a husband or boyfriend, if nothing else, since the kid had to come from somewhere. She had the clone as an insurance policy on herself, after all, so she's got some sense of foresight.
FridgeSquick: Yes, those three- and four-year-olds just had a gratuitous sex scene.
Fortunately for us all, a few plot points sprinkled through the movie do justify the claim that Emotional Maturity Is Physical Maturity here. Even if their happy (and sexless) childhoods, adolescences, and early adulthoods are all fake, those programmed and implanted years of experience can still serve as a foundation for their both being emotionally mature enough to bear the consequences and implications of what they were doing.