A mess
I really liked the first few episodes, but boy did this series turn out to be a mess. There should be plenty of conflict inherent in bringing a third person into a relationship and the best they can come up with is that the neighbors are inexplicably nosey? And they have to come up with all these convoluted stories to explain why Izzy is at the house as if it's abnormal to sometimes have friends over? Huh?
Plus, the entire series revolves around the idea that Jack and Emma have fallen for Izzy, but my god is Izzy annoying. She spends an early episode upset that Andy is ignoring her and then is completely disinterested and dismissive of him by literally the next episode. She also gets upset when Jack and Emma are "talking about her" even though it's perfectly normal that the two of them would do so. And she storms out when they don't spend the day with her even though it's a weekday and should be pretty normal that they'd need to go to work. Even better, she suggests moving in with them after knowing them for all of a week and then is so devastated that they said no that she has to move out of town? Um, okay.