If you only meet for the first time in life, forget everything with a smile, and then start a new journey. What does this passage mean?

A wordless breakup, sent by my girlfriend

Is there a problem between you? She missed and liked you when you were first together, but gradually she didn't like the way you got along or your personality or way of doing things. Maybe she tried hard, but the results were not satisfactory. Finally, she decided to give up. A relationship, getting to know someone again, starting a new relationship,,,,,,,,,,,,