Complex sentence: Jaime had promised Tessa that they will get married once he comes back from a six-month stay in the States for academics, however one day, Jaime's mother (Alicia Alonso) told Tessa that Jaime is committed to an affair with another lady.
Split into simpler sentences: Jaime had promised Tessa that they will get married once he comes back from a six-month stay in the States for academics. One day, Jaime's mother (Alicia Alonso) told Tessa that Jaime is committed to an affair with another lady.