infatuation (n.)

• affection
• ardor
• bug
• case
• craze
• credulity
• credulousness
• crush
• devotion
• dotage
• enthusiasm
• fanaticism
• fascination
• fondness
• frenzy
• furor
• furore
• fury
• gust
• gusto
• liking
• love
• mania
• mash
• obsession
• overanxiety
• overcredulity
• passion
• rage
• relish
• stultification
• taste
• trustfulness
• weakness
• zealotry