I just had a dream about my crush and it was so real !

Why wasn't it real ? I liked his picture on Instagram and shortly after he did the same and sent me a message Idk where. They I couldn't even read the messages clearlt cuz I was nervous. Then we somehow saw each other in the street and he walked me home and he started babbling and saying meaningless thinfs because he was really nervous and we were kinda throwing flirty galances to each other. Then, he told me, I told you everything about me and you still told me nothing abour you ! And when I was about to tell him, I woke up.
Why was it only a dream ? WHY ?! :(