What does it mean when a guy tells you he had a dream about you?

Anonymous
I already am talking to him for over a year. He texted me today saying 'yo i had a dream about you'. I texted back with 'i also had a dream about you few weeks ago lol'. Then we had a conversation for almost 4 hours.

Does it mean anything?
What does it mean when a guy tells you he had a dream about you?
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