There are times when a relationship becomes so tough that you have no clue if you should break things off or stay and fight through the hard times. "Relationships that are oppressive and don't let you live are not worth it," says psychologist Ana Nogales. "But relationships that, even when there is some kind of difficulty, help you mature, grow and expand, those are probably worth it." Read on for her relationship advice on four common situations. Have you ever been completely confused about what your next step should be?