A Man For Life (2008)

Yulia, a lonely spinster, lives a predictable life until her thirteen-year-old niece, Zhenka, decides to find her an husband. Zhenka places a newspaper ad: "Seeking a man for life..." The only suitor she deems suitable is the gruff Gleb, who is reluctant to marry. However, Yulia's ad was a mistake and Gleb was contacted by accident. He then draws Yulia and Zhenka into a dangerous game, with the ultimate reward being a container full of real diamonds.