It's wrong to break up with people for their appearance.
Steve is being flirted with by a girl at work who is prettier than his girlfriend.
Steve wants to get to know the girl at work.
Steve hangs out with the girl at work at lunchtime.
Steve breaks up with his girlfriend because she is not as pretty and begins dating the girl at work.
Steve learns that the girl at work is boring, and he is glad that he is still with his girlfriend.
Steve soon learns that the girl at work is boring, and he misses his old girlfriend.