Unfair curse

Costas finds Peter, a poor medical student, and convinces him to marry his sister Lisa. After the wedding, Peter leaves for London, but when he returns, Lisa's relatives avoid him. What has happened; Costas finds Peter, a poor medical student, and convinces him to marry his sister Lisa. After the wedding, Peter leaves for London, but when he returns, Lisa's relatives avoid him. What has happened; Costas finds Peter, a poor medical student, and convinces him to marry his sister Lisa. After the wedding, Peter leaves for London, but when he returns, Lisa's relatives avoid him. What has happened; Costas finds Peter, a poor medical student, and convinces him to marry his sister Lisa. After the wedding, Peter leaves for London, but when he returns, Lisa's relatives avoid him. What has happened;