Dreams often reflect our subconscious thoughts, feelings, and experiences. In your dream, several elements stand out that could provide insight into your current emotional state and relationships.

1. The Girl from Your Past: The presence of this girl you haven't seen in years may symbolize unresolved feelings or memories from that time in your life. It could indicate a desire to reconnect with aspects of your past or to explore relationships that once mattered to you.
2. The Ride and Lack of Clarity: Her asking for a ride and being vague about the destination might represent uncertainty in your life or feelings of being led without clear direction. This could relate to a situation where you're feeling unsure about where you're headed or how to navigate a relationship.
3. The Invalid Address: The address washing off can symbolize confusion or a lack of clarity about your goals or the direction you want to take. It may also suggest that some plans or paths you've considered are not viable.
4. The Arrest and Locking the Door: Seeing someone get arrested and locking your door could indicate feelings of vulnerability or a need to protect yourself from external chaos. It may reflect concerns about safety or feeling trapped in a situation.
5. Calling Your Ex: This part of the dream may signify unresolved feelings or lingering thoughts about your past relationship. His weird and sexual behavior could reflect confusion about your feelings towards him or the nature of your past relationship.

Overall, your dream seems to reflect themes of uncertainty, nostalgia, and a desire for clarity in your relationships and life direction. It might be helpful to reflect on your current relationships and how they relate to your past, as well as any feelings of confusion or vulnerability you're experiencing. Consider journaling or talking to someone about these feelings to gain more clarity.