Upen confirmed the break-up in a Twitter post.
"Me and Karishma have both agreed to part ways. Thank you for all your love," read his tweet.
Though he did not reveal the reason behind the split, the "China Town" actor appeared quite dejected as he also wrote, "Too much has come to light & shown its true colours. Love is never easy and when a certain foundation is broken it's impossible to move forward."
Around the same time as Upen tweeted, came 32-year-old actress' post on her page that read, "When you find no solution to a problem, it's probably not a problem to be solved. But, rather a truth to be accepted."
They got engaged last year, when Upen, 33, proposed to the actress on dance show "Nach Baliye 7", where they were participants.