well gauthum will marry sanya that is confirmed .
but one thing we have to remember that sanya loved dk and wanted to marry him but he rejected her for disha so now will she surely want to seperate dk and disha and now since she will marry gauthum she will do her best to keep disha away from dk ,so she will strongly support disha's marriage with dk.
As it is anticipated that inder will again try to go back to disha after her return to bhonsle house, so in order to keep indy and ranu together disha might agree to marry vedanth under pressure .
But we have to hope that at the last minute vedanth realises that dk and disha are in love and he does something so as to bring them together.