When Mahrukh Ibrahim, 20, and Junaid Miandad, 22, tie the knot in Karachi this week, senior members of the intelligence communities in Washington, New Delhi and Islamabad will be keeping a close watch.
Security analysts fear the wedding bells could harm the fragile peace process that is under way between the South Asian nuclear neighbours and even strain Pakistan's relations with the United States. The edginess stems from the fact that the bride's father is Indian-born Dawood Ibrahim.
Labelled a global terrorist with al-Qaeda links by the US Treasury Department in September 2003, a US notice accused the alleged underworld boss of smuggling narcotics to the west and sharing the spoils of his crime network in Asia and Africa with al-Qaeda.
The US also identified Ibrahim as a resident of violence-prone Karachi and listed his address, telephone numbers and Pakistani passport details.
But that's not all. He is India's most-wanted man. New Delhi accuses him of masterminding a series of bombings in Mumbai that killed 300 people in March 1993 in an act of revenge for the massacre of Muslims in India's financial capital earlier that year.
Indian authorities say he escaped to Dubai after planning one of the world's worst urban terror attacks at the behest of Pakistan's Inter-Services Intelligence (ISI).