Can We Be Too Comfortable in a Relationship?

I recently commented in an article with Bustle.com:

“When you become too comfortable in a relationship, you run the risk of not prioritizing the relationship,” says psychologist Piper Grant, Psy.D, MPH over email. “When we begin a relationship, we take incredible consideration in taking care of ourselves, presenting ourselves, being considerate of our partner, and putting effort into the relationship. As time goes on, if we begin to feel too comfortable, there is the risk that we don’t do all of these things and the relationship can suffer as a result.”