Why does vlade choose anja over Lucia?

It is the early 1930s in Czestochowa, Poland. Vladek is young and handsome, and working in the textiles business. One day his friend introduces him to a girl named Lucia, and the two date for three or four years, but Vladek never feels particularly committed to the relationship. He travels to Sosnowiec, Poland, to visit his family in December of 1935, and is introduced to a girl named Anja, who is "clever, and from a good family." They hit it off, and though they live 40 miles apart, they begin to speak on the phone at least once a day. Anja send Vladek a photo of herself, which he places on his dresser. When Lucia sees the photo, the two end their relationship. Vladek and Anja are engaged at the end of 1936, and Vladek moves to Sosnowiec to live with his fiance.