I would certainly not count myself as a relationship expert. But, based on what I have heard discussed by both men and women in long-term relationships, you are absolutely right. Routine kills romance. Comfort-knowing you can count on your significant other, as if it were money in the bank-is a recipe not only for the death of romance but also, from what I can tell, increasing the chance your partner might stray-not necessarily by intent, but rather being vulnerable to seduction by compliment.