It’s a question that comes up a lot. Back when people could just post a thread right away, we had a flood of posts like this that would give a few basic details and ask people to confirm it for them.
The search for a definitive test or checklist is completely understandable. Especially in the modern day, where we’re all raised on this instant gratification diet of easy answers and apps doing everything for us.
Your twin flame doesn’t care about this, though. They tend to show themselves in ways that are hard to quantify. If you try explaining twin flames to friends and family, you’ll often get some very confused looks because sometimes there just… are no words. There are some things you can’t really explain if the person hasn’t experienced it by themselves.
It actually makes questions like this pretty frustrating to try and answer because the only real answer is… if you know, you know.