Actor Ranbir Kapoor has revealed that he felt nervous and hesitant while shooting the intimate scenes with Aishwarya Rai Bachchan in the upcoming film 'Ae Dil Hai Mushkil'. "Phir unhone hi bola, '...We are acting, come on do it properly.' Phir maine socha, kabhi aisa mauka milega nahi, so maine bhi mauke pe chauka maar diya!" added Ranbir.