Not invited to stag do.

[Blimpop]

My friends dh wasn't invited to his brothers stag do, which he's just found out is next weekend. They did have plans but it fell through. He thought they hadn't re arranged anything, and so has said to his brother they'd do something, thinking nothing was happening. They haven't fallen out or anything, do live probably 2hpurs away, but that wouldn't of mattered.
My aibu, would you say something? Or just leave it. My friend thinks he should say to his brother, although it was probably his friends who organised it, incase his db thinks he didn't bother . I think just leave it, I don't think his dB would intentionally not invite him.

It's not up to either of you, it depends on what your friends DH wants to do.

It has nothing to do with you. Move on.

If the DH is struggling with not being invited, then he should say something. But that advice should only be given if asked for.

Yeah I think that's my point, I would just leave it, but she's saying he should talk to his brother.

She should stay out of it.
It's between them.

If the friend's dh is bothered, he should have the conversation with his brother, but it really isn't anything to do with you.