T’challa seeks a bride to marry. Out of everyone he chooses Ororo Munroe aka Storm 

Takes place just prior to and during Civil War

T’challa proposes marriage to Storm who does not give him an immediate answer

Ororo finally accepts and T’challa shares the news as the Avengers feel happy and the X-men feel more ambivalent

The marriage happens in the midst of the superhero civil war as Black Panther invites both pro-reg and anti-reg heroes to Wakanda aka neutral ground and are expected to keep the dispute contained- a cease-fire

Iron Man and Captain America cannot stomach each other and neither stay for the ceremony