Boseman and Ledward started dating in 2015, with the couple getting engaged in October 2019 and secretly marrying afterwards.
Their marriage was confirmed in a statement from the actor’s family after his death.
Chadwick continued to work on several films and devoted his time to visiting sick children in hospital despite being diagnosed with stage 3 cancer in 2016.
According to a report by The Hollywood Reporter, apart from his family, Chadwick “only told a small group of insiders” about his cancer battle.
“No one involved with Black Panther was aware,” a source told the publication.