BUSINESS INSIDER - July 27 - "Two people who are able to competently handle all of the sh-- that hits the fan. That's the biggest thing a long-term relationship needs in order to be successful," said Alexandra Solomon, a psychologist at Northwestern University. She teaches a course at Northwestern called "Marriage 101"; she recently published a book titled "Loving Bravely." In the book, Solomon guides readers on a journey toward relational self-awareness. She is saying that it is important to find a relationally self-aware partner because "external trappings" - think jobs, income, appearance - tend to "come and go." It's not so easy to gauge someone's relational self-awareness level on the first few dates. But if you notice that the person blows up at the waiter for bringing them the wrong drink, that's not a great sign. Solomon also suggests paying attention to how the person talks about their past relationships.