• Not calling as much. If your boyfriend or girlfriend suddenly goes from calling a couple times a day to verify plans or just to say "hi" or "I love you" to "forgetting" to call altogether, even when running late, it could mean his or her interest is waning and they are seriously considering ending the relationship.
• Loss of intimacy. In the beginning of a relationship, sex and intimacy is at its peak, and it's natural for it to die down a little as the newness and excitement of the relationship wears off and real life sets in. However, if it stops completely or you go weeks without any physical intimacy, it could be the sign of a broken relationship and eventual breakup.
• Picking fights. If your partner begins nitpicking or criticizing you for little things that he or she used to let slide, it could be an indication of a broken relationship. When a partner picks fights or expresses annoyance, particularly at your personality traits, it could mean a breakup is imminent. At the same time, if you notice that you are fighting more than usual, regardless of what it's about, this is also a sign of a broken relationship.
• Talking about breaking up. If you seriously wonder what it would be like to date someone else, or if you or your partner throw around the idea of breaking up, this is a definite sign that you are heading towards a breakup.

What to do
Broken relationships mean breakups, but only if you allow things to continue on a downward path. Couples who recognize red flags and broken relationships and then work to repair them have a much better chance at staying together.

• Communicate. Communication is key in any relationship, particularly when problems arise that need to be sorted out. If you notice your relationship is broken and headed towards a break up, or if you know the issue that is causing the problems, it is important to sit down with your partner and have an honest and open discussion about it. This could mean a breakup, or it could set you on the path to repair your relationship.
• Don't act irrationally. Oftentimes, breakups occur when parties are angry at each other. Make sure if you are going to break up, you do so only after careful thought rather than in the middle of a heated argument. More often than not, a break up is a final thing, so make sure it's what you really want before telling your partner. At the same time, if your partner breaks up with you in the middle of a fight, ask him or her if they would rather have some time to think about whether or not that's what they really want.

If your relationship is broken and remains unfixed, chances are it means a breakup. The above tips will help you not only know what to look for, but how to repair a broken relationship that is headed for a breakup.