What is the reason why the general relationship falls apart?

There are several reasons for the breakup of a relationship: 1, the two sides have nothing in common and can't talk together, which is probably due to different interests and hobbies. 2 through contact, I found that the other person has a personality problem, even out of place with myself. The other party's economic conditions, education, career, ability to handle affairs and development potential are not ideal. 4 find that the other party has health problems.