No need for an apology, especially as the Mukti Bahini were responsible for killing between 500,000-1 million Biharis:
Blood and Tears and the massacre of Non-Bengalis by Mukti Bahani|Dacca Times
The sheaves of eye-witness accounts, documented in this book, prove beyond the shadow of a doubt that the massacre of West Pakistanis, Biharis and other non-Bengalis in East Pakistan had begun long before the Pakistan Army took punitive action against the rebels late in the night of March 25, 1971. It is also crystal clear that the Awami League’s terror machine was the initiator and executor of the genocide against the non-Bengalis which exterminated at least half a million of them in less than two months of horror and trauma. Many witnesses have opined that the federal Government acted a bit too late against the insurgents. The initial success of the federal military action is proved by the fact that in barely 30 days, the Pakistan Army, with a combat strength of 38,717 officers and men in East Pakistan, had squelched the Awami League’s March-April, 1971, rebellion all over the province.
Panchabibi, Jessore: The Mukti Bhani massacres of Biharis|Today's Views
Actually Mukti Bahini and Bengal Regiment personnel raped the Bihari and west Pakistani women killed about 800,000/ to 1,000,000/ innocent Biharis and West Pakistanis in East Pakistan in 1971. After the 16th of December 1971 Bangladeshis showed the dead bodies and graves of these innocent Biharis and Pakistanis as Bengali people killed by the Pakistan army.
Mukti Bahini killed 1 million Biharis:
Mukti Bahani massacres of Biharis in Panchabibi, Jessore « Bogra « Rajshahi « Sonar Bangla « Bangladesh Patriot
I love the Bangladeshi people today, so I really hope you get past this ugly chapter in our history. No need for apologies from either side. Pakistan feels the pain of 1971 everyday, but in the end you got what you want. Now let's move past this and live as brothers. Peace.