There was something unhealthy about this relationship, and you finally woke up to it. What were the unsavory acts or emotions your lover drew from you? Your worst side was emphasized in your sweetie's presence; you became more aggressive, temperamental, egotistical and impatient, while your lover's tendency towards laziness and excess seemed to swell when you were around.
You two may have had accumulated debt together (perhaps credit card debt, gained from your tendency to spend too much on fripperies), and you had difficulty keeping to a budget. Even worse, your sharply dissonant views on matters like beliefs, ethics, politics and education meant that you had difficulty finding common ground. Nonetheless, if, despite this, you still had wanted to make this work, there was an opportunity here for a fine connection. You shared a certain drive and passion, and were both equally openhearted and loving. If you could have found a way to compromise, a way to look past your differences and create new habits that served you both rather than creating problems, this could have been a very solid and sweet relationship indeed.