Jessica Rojas, a Springfield woman who turned 25 Friday, died after an argument with her boyfriend ended in a stabbing early yesterday, police said. A neighbor heard the couple arguing in Rojas’s home at 132 Washburn St. and called 911 at 3:15 a.m., Police Captain Peter Dillon said. Police found Rojas alive, but with multiple stab wounds, Dillon said. She died in Baystate Medical Center. Police are looking for Rojas’s 30-year-old boyfriend, Jose C. Santiago. Anyone with information about his whereabouts can call police at 413-787-6355.