The only good example I can think of where people actually explain themselves is Agents of SHIELD, which isn’t even a movie. It’s amazing. She doesn’t doubt his loyalty for a second and understands, given their situation, why he had to keep it a secret from her. You still get drama, but it’s drama from everyone being on the same dramatic page.
Entire plot lines hinging on people not explaining themselves which would take about 5 seconds.
The idiot plot.
The only good example I can think of where people actually explain themselves is Agents of SHIELD, which isn’t even a movie. It’s amazing. She doesn’t doubt his loyalty for a second and understands, given their situation, why he had to keep it a secret from her. You still get drama, but it’s drama from everyone being on the same dramatic page.