Relationships take time to flourish and grow. There is no specific time frame that this process can take. However, there is this thing called "Intuition" that one can use to discern important clues, to determine if more time should be spent on something that may not be worth it.
Love can make people do some odd things sometimes. Have you ever ended a relationship with someone, then asked yourself, "Why didn't I leave a long time ago, what was I waiting on?" There is no shame in admitting that this happened to you once or twice before. Sometimes during the relationship one of you may have matured and eventually lost interest. Usually when this happens, one person in the relationship doesn't want to let go. Maybe you are the person who grew more matured in the relationship, and decided that this person is just not for you. At times this is not the case. Your partner may start to show signs that he doesn't want to be in a relationship with you anymore. If this is the case, the best advice is to end the dead end relationship immediately. It may seem difficult, but to avoid further pain, this is the only choice. If someone really loves you, they would make every necessary effort to work on any issues that arises. If your partner is not showing the interest that you deserve, cut your losses and move on.
If you are dating and you see that the relationship is not going anywhere any time soon, why waste your precious time? What are you waiting on? Get out now, before it is too late. Never plead with someone to stay with you. That is the worst thing that you can ever do. They might stay, and decides to use you to their advantage. If you are in a relationship and always feel lonely because your partner doesn't want to spend time with you, slowly withdraw yourself from this troubled relationship. You should not be lonely if you have someone who claims to love you. You can do better by yourself alone.
One of the biggest mistakes that some people make, is to abandon their families and friends when they are in a relationship with someone. This applies to married people and also those who are dating. When the relationship gets sour, there is no one to turn to for support. A dead end relationship can go on forever if you allow it. Take the initiative today and end that dead end relationship.