A thermometer on the other hand, as we have learnt during Covid, indicates that something could be wrong!
Likewise, in a healthy marriage, sex reinforces the relational bond. It is the most intimate and private act that couples share, a celebration of their unity and oneness. In this regard our sex life can be an indication of the well-being and health of our relationship.
Sex involves the physical, mental, emotional, and spiritual and therefore reflects our well-being in these areas. Therefore, a lack of interest or rejection or withdrawal, may be because of something physical like fatigue, a pregnancy, a diet or the children. Mentally it could be due to stress. Or emotionally as result of guilt, conflict, anger or abuse.
So be mindful of these things and communicate it with one another.