Will those whom people loved, who entered Hell, join them in Paradise? And is it possible to release loved ones from Hell? And will a person be reunited with those he loved, other than his unmarriageable kin, in Paradise?

It is not permissible for a Muslim man and a Muslim woman to establish relations except within the framework of a legitimate marriage. Those whom the people of Paradise love from the people of Hell will join them [in Paradise] if they were among the people of Tawhid (monotheism), through their intercession to bring them out of Hell and admit them into Paradise. Intercession does not benefit the people of Shirk (polytheism). Intercession is of two types: intercession specific to the Messenger - peace be upon him - such as his greatest intercession for the people of the Standing [on the Day of Judgment], and general intercession for the Messenger and all believers. This includes intercession for those who deserved Hell so that they do not enter it, intercession for those who entered Hell so that they may exit from it, and intercession for raising the ranks of the believers.