Should i tell her i had a dream about her?

So the other night i had a dream about this girl. Lets just say her name was Lucy. In the dream my girlfriend slept with lucy's brother which of course made me extremely mad. But out of no where Lucy came into the story and we were all of sudden (for lack of better words) "in love". After that we kind of just ran around doing various things. However the most important thing is that we were basically like boyfriend and girlfriend in the dream. It was an extremely real-feeling dream. One of those dreams where you have to think to yourself for a while after you wake up to make sure if it was real or not. In real life i think this girl is extremely attractive and i've liked her for awhile. The catch is we barely ever see each other and don't even talk that much. For some reason i feel compelled to tell her that i had a dream about her but i'm not sure how she'd react. I don't want her to think that i'm a creep ha ha. And i have the suspicion that she might think i'm a bit of a creep already just for the fact that i like her so much for not being that close of a friend with her at all. But maybe not because she at least talks to me when i find a reason to start conversation with her, which is seldom. And she probably doesn't even know that i like her this much. So, am I just overly obsessive and she's going to think i'm a creep if i tell her about having this dream? Or if not how do you think she would react?