Relationships are no excuse to the reality that everything in life is destined to face the cyclical nature of creation and destruction, birth and death, beginning and end.
Signs a relationship is ending
While the relationship may have been filled with happiness in the beginning, the following signs are good warnings that something may be up.
1. S/He has changed their pattern of communication with you. Could be texting or calling less or more. Typically though the lesser communication means the greater the problem that s/he is mulling over in their head again and again and hasn't been able or doesn't know how to tell you.
2. S/He no longer wants to be affectionate in public. The PDA is MIA. When your partner, boyfriend or girlfriend no longer wants to be kissed or touched in the same way, then their is definitely some coldness in their heart about the two of you being together.
3. S/He is not as intimate with you in private. If they sexually are not interested, something has happened and they sadly may have feelings for another. But don't be discouraged, whatever the case is, all will be alright.
4. S/He doesn't want to spend as much quality alone time with you and instead wants to go out in groups. You can really tell this one because he/she will likely tell you how they want space to be free to meet other people and pays less attention to you when you go out then before. When you go out, it is no longer about the two of you but just for themself and you are tagging along.
While these are all generalized, for the most part and across the board, if you notice a change in your partner, it means something is up and you need to make the effort to communicate.
Whenever you face a problem like this, you have have have to communicate and feel out what is going on. If you partner is particularly closed off to talking about deeper things, this will only make this process that much more harder for you to get to the bottom of it. If they are open or you can open them up by asking non-threatening questions about your observations, you may be able to discover more of the truth. If you hear anything around the words of space, discovering myself, break, etc, then it may be time for the two of you to have some time apart to process. A week should suffice for shorter relationships, but for ones around 2 years or more, you may need a month plus apart to figure things out.