Is being TOO comfortable a kiss of death?

[RollTideWin]

In the relationships I have had throughout my life, I have spent endless amounts of time trying to decide what level of comfort is healthy and what goes too far and kills romance. I'm not sure I've found the golden ticket, but I do know in my current relationship, I'm walking a very livable tight rope. There is laughter and comfort beyond belief but there is still mystery and trying to impress each other. 

 

I'm curious how anyone else has done with this in their relationships? I may think I have a good situation but I'm always open for improvement or enlightenment.

This article on the site was eye opening and really got me thinking:

Is Your Relationship TOO Comfortable? by Michelle Afont