When does 90 Day Fiancé: HEA Strikes Back! return?

90 Day Fiancé is an American reality television series on TLC that follows couples who have applied for or received a K-1 visa, available uniquely to foreign fiancés of U.S. citizens, and therefore have 90 days to marry each other. This visa allows the fiancé from a foreign country to travel to the US to live with their prospective American spouse.
The show is based on the K-1 visa process. This visa allows the fiancé from a foreign country to travel to the US to live with their prospective American spouse. The purpose of the visa is to provide time for the couple to make arrangements and have a marriage ceremony.