How many times do we bite our lip while seething with anger or send mental daggers across the room towards our spouse when they annoy us? Resentment can be suspicious, dangerous and damaging. When the seeds of resentment are given an opportunity to grow, they will take root and cause division. It may leave you annoyed at the person you are sleeping with. Their demeanor might make you flee the room or worse--end the relationship! Author Elizabeth Gilbert put it this way: “As smoking is to the lungs, so is resentment to the soul, even one puff is bad for you.” That pretty much answers how serious resentment can be for you and for your marriage. In the end, we all wish that we didn't allow resentment to hinder our lives, so we need to be proactive. Pay attention to 5 ways resentment will ruin your relationship.