translation.en: Turing told the spy, because Turing was about to get married to Clarke (Knightley).  It sounds like high drama to me.  The spy (before Turing realized he was a spy) told Turing to keep his homosexuality a secret.  I guess they were pretty tight.
translation.hi_en: tyooring ne jaasoos ko bataaya, kyonki tyooring kee shaadee klaark (naitalee) se hone vaalee thee. yah mujhe uchch naatak kee tarah lagata hai. jaasoos (tyooring se pahale ehasaas hua ki vah ek jaasoos tha) ne tyooring ko apanee samalaingikata ko gupt rakhane ke lie kaha tha. mujhe lagata hai ki ve bahut tang the.