Breaking up is hard to do, but it is an experience almost everyone goes through at least once. In some cases, a very awkward situation can arise when someone happens to run into an ex in the cereal aisle at the grocery store or in line for a latte at a coffee shop. On Saturday at Spartan Stadium, about 70,000 Michigan State fans may experience their own version of this awkwardness. One of their exes recently moved to suburban Chicago, but Spartan fans are about to encounter somebody that they used to know. That somebody is Northwestern starting quarterback Aidan Chiles. Chiles’ relationship with the Spartans lasted almost two years. Now and then, when I think of when he first announced his transfer to Michigan State, I remember how happy Spartan fans were. They told themselves that he was the right quarterback for East Lansing. Chiles received plenty of love from Spartans fans at first, but the relationship slowly soured. He struggled with inconsistency, turnovers, and injuries. After ...