How to comfort my boyfriend's grandmother is seriously ill, how to comfort his mother, and what to say?

Quite simply, the brain circuits of men and women are different.

Women need someone to comfort them when they are sad, but men don't. Men just need to be quiet, rest and think for themselves. At this time, women don't bother him, just accompany him silently.

When he talks to you, you can tell him something similar to your experience, which leads him to sing, and he will naturally tell you.