an army guy is going to get married to a kashmiri girl, but on the wedding day a bomb blast devastates the marriage hall, the girl get's paralysed and goes to canada for treatment, she still believes a fiance is alive and will meet her some day....

This plot describes 'The Hero' (2003) starring Sunny Deol as the army officer and Preity Zinta as the Kashmiri girl. The film follows this exact storyline - their wedding is bombed, she's paralyzed and treated in Canada, and she believes he's still alive. 'Gadar' (2001) has a different partition-era plot. 'Indian' (1996) and 'Big Brother' are unrelated to this storyline.