As a Russian film, directed by Andrey Zvyagintsev with cool detached skill, Loveless definitely at least lives up to its title.
Definitely, as we see a mother, Zhenya (Maryana Spivak) and father, Boris (Aleksey Rozin), not making any bones about how much they hate each other, their son, Alyosha (Matvey Novikov) becomes increasingly isolated and one day goes missing. The bickering couple then go looking for him, and this plays out in good and not-so good ways.
Giving one quick example, the father almost seems too timid compared to the mother, who keeps notably (and alienatingly) using her smart phone. The director Zvyagintsev may have wanted to show maternalism in a dominating, alienated position. But this consistency means it can become repetitive.
In the end though, Loveless works enough as an alienated, slow-burn drama, if you can stick that sort of thing.