My crush was falling in love with me. In real life he has a girlfriend now. But he realized he made a mistake in my dream.
Dreams about crushes often symbolize our desires and expectations. In this dream, your crush falling in love with you may represent your hopes of being noticed and valued by him. The fact that he has a girlfriend in real life could indicate that you are aware of this imbalance and trying to resolve it in your dreamscape.
The part where he realized he made a mistake in your dream could represent your subconscious desire for him to come to the same realization in real life. However, it's important to remember that dreams don't always come true literally, and this dream may simply reflect your inner feelings and desires.
Overall, this dream may indicate a need for clarity and resolution in your current relationship with your crush. It could also suggest that you want to feel valued and appreciated in your romantic relationships.