Quentin L. Cook of the Quorum of the Twelve Apostles made this observation,

While anything that lessens commitment is of consequence, two relevant challenges are both prevalent and significant. The first is unkindness, violence, and domestic abuse. The second is sexual immorality and impure thoughts. These often precede and are at the root of the choice to be less committed.

2012 October General Conference, “Can Ye Feel So Now?”