I seldom go home because of my long business trip, but I just received a short message from my girlfriend, which said, "We can only be friends. ...

Obviously, you spend too little time with her. What's the difference between looking for a boyfriend and not looking for him all the time? Another point is that there is not enough communication between you. Women are more sensitive, and now society makes them more realistic. No one wants to live with a person who can't see each other all day unless they love each other to a certain extent, so either you take her away or you try to adjust your work and spend more time with her. If you care about her ...