It's very important to pay attention to red flags about someone's personality when you're conversing. Put your fleshly desires behind you and make the right choice. Yes it's ok to be attracted to the opposite sex of course, but be strong and pay attention. Humility, kindness, decency, and such attributes should catch your attention more than looks. Those who have these personalities themselves will find it much easier to notice. Read the scriptures more and get advise from different bible readers and you will see things more clearly. You shouldn't be married to someone for so long before you finally realize that you can't bare the marriage any longer. But for those who are already married but refuse to get a divorce and having difficulties, there are ways to fix problems but you won't find a solution if you're not looking. When you have a problem that needs to be fixed, you can argue and complain to each other or you can take the time to make the necessary improvements. And if you don't know how to fix a problem then you could get advise elsewhere such as the scriptures, and take note of elders who are happily married. Look for a solution and eventually you will find it. Have the humility to understand that we're not always right about everything and we need make adjustments in our life even as adults or elders.