There is a scientific reality called the law of repulsion. This law is based on simple physics. Like charges repel each other; unlike charges attract. consequently, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges.
A simple example of this would be a pair of magnets pointed at each other. When you take the positive end of one magnet and the negative end of another magnet they will pull together. Conversely, when you take a positive end of one magnet and try to join it to the positive end of another magnet they will bounce or repel away from each other.
The example I gave is a simple way to take in the information that two people with similar energies repel each other. This may seem counter-intuitive at first but when you did into the physics of this you see that we as humans try to gravitate toward other humans that look and sound like us. This is basically the heard mentality. And to add more insult to this idea, we see this happening all the time and it seems to be working.
That would be your thinking mind just excepting what you've been taught. Boys like the color blue and girls like the color pink. Similiar races of people tend to marry more often than not.
I use the repulsion law to share an idea or thought I'd like you to consider. If you are struggling in a relationship that isn't resonating with you take a look at how similar you are to your partner. Do you subscribe to the same fears?
Are you critical of the same things? And do you have similar feels about your relationship?
These may be hard to consider at first but I ask you to be as honest as you can. You may not be the only one in your relationship that is not happy. Remember, this is a universal law so your partner may ignore their feelings but they are still there.
Now for the fun stuff. If you are really doing this work you can look around and have new experiences with folks that are very opposite of you. People you may have never considered could be really interesting and fun to be around. The word repulsion has a certain connotation to it and may bring up feelings or thoughts of wrong or right. This is not so. Repulsion is a physical reaction to something that is "like" or "same" and it has no judgment of you or your partner. It is just what it is, energy moving away.
I would recommend that you dig into who you are and better understand what your specific energy is and embrace what you love and work on what you don't yet fully understand. This will help you have a better understanding of the person you are and the people you would like to attract.