Why millennials living with their parents has become the norm in Southern California

ANAHEIM, Calif. — Xitlali Tapia and Ivan Perez got engaged in January and set a wedding date for Nov. 25. After that, they’ll move in with a pair of unexpected roommates — her parents. Perez, 26, never dreamed of living with his in-laws. But he and his fiancee, also 26, plan to return to school later…