Finding the right person means knowing when to cut things off with a significant other who is a dud when necessary. Studies have shown that your relationship with your significant other can have a serious effect on your mental and physical health. Sometimes it can feel like you may have found Mr. Right, but every relationship and every person has things that are not ideal about them. Accepting these differences is an aspect of love, but some things just cannot be ignored. So how do you tell if your significant other will be a dud within a year?