The love of Billy and Mary

Billy is a lifeguard. He felt sad because he didn't have a girlfriend. One nigth He met a beautiful girl in a party. He was very interested in her. Everything got on well. One month later they went to the beach. They fell in love. One nigth he wanted something more serious and he asked her to marry him. She was very happy and accepted. Two months later they got married. The love of both was very strong, but  living together was difficult and made them argue. The fingths were very constant in their home, then they got divorced. After that they found that their love was very big and then got back together again.