I feel like a relationship has unlimited possible trajectories until the first major disagreement

My theory is that your entire relationship depends on how that first argument is handled

I don't know what that means but I agree.

No this is very close to what I think. You're not in it until you've had to surface and resolve some shit.

That's why trajectories must be executed carefully.

that's what happened in my case, so i'm inclined to agree

You’re right. You can often see the end flash before your eyes

Like quantum mechnanics