Your co-founder wants to pivot. You don't. How do you handle it?

This is one of those founder nightmares nobody talks about until it happens.

You've spent 6 months building. Things are moving, but not fast enough for one of you. Your co-founder comes to you with "the new idea" completely different direction.

You believe in the current vision. They're losing faith.

Do you:

• Follow their lead and pivot together?

• Split and go separate ways?

• Try to convince them to give it more time?

• Compromise with a "hybrid" approach?

I'm curious how people navigate this. It's not just about the product it's about the relationship, sunk cost, and momentum.

Has anyone actually been through this? What happened?