It's My Friend's Wedding

Sanjay and Anjali are childhood chums. When Sanjay's roommate Ria declares he has fallen for Anjali, he vehemently denies it. But the truth hits him like a ton of bricks when Anjali calls to tell him that she is getting married to Rohit. Sanjay wants to win Anjali's heart at any cost and sets off on a mission to stop the wedding. Based partly on the American film "My Best Friend's Wedding" (1997).