Wuber

Wuber (adj./verb/noun): A state of intense fixation or obsession, where someone can't stop thinking about something or someone.

Adjective: "I'm so wuber about you." (Deeply obsessed or fixated)

Verb: "I'm wubering over that conversation we had." (Continuously thinking about)

Noun: "My wuber for this book has taken over my every thought." (Obsession or fixation)