First of the BLF did not have Purab's character. Thanks to our good old traditional Indian masala mentality, the directors squeezed in without even realizing what they were doing.
Jassi was going good till until Purab showed up and messed up the entire equation. Before him, the serial was more comical and not so tight. After purab's entry the serial became very serious.
Its no secret that Jassi is going to marry Armaan sometime down the lane. And Purab had to vapourize one day or the other. The inbetween love story between Purab and Jassi just did not fit well. Its worse than the horribly flopped movies.
Just my thoughts folks.