Plenty of factors can make tiny cracks in your relationship and weaken it to the point where it's irretrievably broken. But a few relationship no-nos can serve as complete dealbreakers. Is your union headed in the wrong direction? Read on to learn about seven major relationship killers. First on the list is secrecy. When you keep secrets from your partner, particularly ones that affect you both, you chip away at the hard-fought trust and intimacy the two of you have fostered. Whether it's major financial decisions, health issues or ones having to do with the kids (if any), when discovered, secrets can be explosive. Don't let the green monster get between you and your partner – jealousy is another relationship killer. If you're the one who's jealous, get to the bottom of your feelings. Do you feel powerless? Insecure? If so, are these legitimate feelings to have in the situation? Perhaps your partner is paying more attention to a coworker or spending more time with his friends. There could be perfectly good reasons, so communication is key.