"I’ve heard from your wife—she needs your attention. She tells me she’s lonely. She feels isolated and ignored. Her life is wrapped around children, work, and/or household chores. She used to feel in love with life, and in love with you, but now she feels worthless and uninteresting."
"My husband and I got in an argument this morning (like most couples do) and we put each other on the silent treatment for a few hours because we weren’t at a point to receive what the other one was saying."
Sex is also usually one of the first things to enter a romantic relationship when things are going well and one of the first things to disappear when things turn south.