Has there ever been a case where the characters in your dreams evoke so much emotion that you wake up and miss them for days on end, and wish you could meet them again?

They feel far more solid and real than regular dream characters, they're often believable and you can sometimes feel their emotions, often strong feelings of happiness and love.

Then when you wake up and realise they weren't real after all, it hits you so hard that you might even cry, knowing that such lovable and rich (I mean in character, not monetary wealth) people weren't real after all.

Has anyone ever dealt with this?