Given her explosive chemistry with Salman Shah, rumors of an off-screen romance were inevitable. For years, tabloids claimed their on-screen passion spilled into real life. However, close sources (including director Chashi Nazrul Islam) have consistently denied this. In a 2018 interview, Mousumi cryptically stated, "Salman was a very special co-actor. We understood each other without words. But that connection belongs to the camera. After the cut, we were different people."
While not as frequent, Mousumi also excelled in grey-shaded romances. In these narratives, she played a woman caught between societal duty and personal desire, often navigating complex love triangles where her character’s morality was questioned, yet her emotional logic was undeniable.
Fans often conflated their on-screen romance with reality. Tabloids frequently speculated about a spark between the two, fueled by their effortless synchronization in romantic dramas like Premer Tajmohol . However, this was a masterclass in professional acting. Their "relationship" was strictly a narrative device, a partnership built on mutual respect that allowed them to deliver some of the most memorable love stories in Bangladeshi film history. It taught the audience that chemistry does not always equal a romance; sometimes, it is just the magic of two artists perfectly understanding the same rhythm.
However, with films like Dui Duari (2000) and later television dramas, Mousumi began to explore more complex and mature romantic relationships. While never abandoning the core value of familial duty, her characters started to exhibit a nascent agency. The romantic conflict was no longer simply about external obstacles but about internal dilemmas: choosing between a loveless marriage of security and a passionate but uncertain affair; navigating the resurgence of a past love after a husband’s betrayal; or, most significantly, finding love and companionship as a middle-aged widow or divorcee.