Ranbir Kapoor literally fell flat on the floor when he got a chance to dance with his childhood crush, actress Madhuri Dixit on his father's evergreen romantic number "Main shayar toh nahin".

Ranbir paid a visit to the sets of dance reality show "Jhalak Dikhhla Jaa 5" to promote his forthcoming release "Barfi!". There was no way he could have missed the chance to match steps with the dancing diva.

So, he requested her to join him on the dance floor on the song "Main shayar toh nahin" from his dad, actor Rishi Kapoor's film "Bobby".

Once she agreed and danced with him, Ranbir jumped all over the stage like a teenager, says a source.

Whenever Madhuri took his name on the set, Ranbir blushed like a school child and hid his face. He fell flat on the floor after Madhuri danced with him, and the actress was quite shocked with his craze for her.