It's essential to understand that human behavior can be complex and driven by various emotions and motivations. Driving by someone's house whom you had a relationship with can be a natural curiosity, especially if the relationship was significant or emotionally charged.
Whether this behavior qualifies as an "obsession" depends on the frequency, intensity, and impact it has on your daily life and well-being. Occasional curiosity or passing by a previous partner's home might be considered normal in certain circumstances, especially when trying to process emotions or memories associated with the relationship.
However, if you find yourself constantly fixated on the individual, unable to stop thinking about them, and engaging in repeated stalking-like behaviors, it could be a sign of unhealthy attachment or obsession. Persistent, intrusive, and distressing thoughts about the person, coupled with behaviors that interfere with your life or mental health, may indicate a problem.
If you are concerned about your feelings or behaviors, it might be helpful to talk to a mental health professional or counselor. They can provide support and guidance to help you understand your emotions better and develop healthy coping mechanisms. Remember, seeking help is a sign of strength, and it can lead to personal growth and positive change.