What happened to Upen?

Bechara jab bhi bolta hai toh girls rone lag jati hai, opar se Salman also makes fun of him for being nice to sushant.. Havent heard his cute voice and accent for days now😳😳.. For some reason I think ke even he thought that Karishma is a big nautanki hence hes quite and didn't take part in all that stand wagera