For years, the media speculated that Apu was dating a non-industry businessman. The rumors intensified when she began wearing a sindoor (vermilion) at public events but refused to name the man.

Apu has kept her personal life relatively private, but she has been open about her relationships and marriage. In 2011, she tied the knot with businessman and entrepreneur, Ashiqur Rahman. The couple has a daughter, born in 2016. Apu often shares glimpses of her family life on social media, giving her fans a peek into her personal world.

In 2017, the Bangladeshi entertainment industry was shocked when Apu Biswas appeared on a live television broadcast with a baby boy. She revealed that she and Shakib Khan had been privately married since 2008 and that the child, Abraham Khan Joy, was their son.

Following her divorce, Apu's romantic life continued to be a subject of intense media speculation.

Bangladeshi actress Apu's relationships and romantic storylines have been a major draw for audiences and a subject of fascination for fans and the media. With a career spanning over a decade, Apu has established herself as a talented and versatile actress, capable of bringing complex characters to life.

The most defining romantic storyline of Apu Biswas's life began in 2006 on the set of Koti Takar Kabin , where she first met Shakib Khan

Apu Biswas , a prominent Dhallywood actress, is best known for her extensive professional and personal history with superstar Shakib Khan . Their relationship, which transitioned from on-screen romance to a decade-long secret marriage, remains one of the most discussed storylines in Bangladeshi entertainment.