The recently released teaser of Karan Johar's 'Ae Dil Hai Mushkil' is garnering great response from all, especially because of mesmerising chemistry between the first-time on-screen pair--Ranbir Kapoor and Aishwarya Rai Bachchan. But the most probable question that arises is 'will 'Ae Dil Hai Mushkil' benefit Ranbir ? Will it bring his career back on track ?