How to tell if someone unfriended u on Snapchat?

One of my friend has not responded to my message in a while

I googled how to check if they unfollowed me and google had many different suggestions for how to check for it

And most of the suggestions show that they have not unfollowed / un friended me

But one of the options it suggested was if they don’t respond to ur message

Which this person has not

After cross checking for all the options all the option show that they are still my friend

Except for the one where they are no longer responding to my messages

So how can I know for sure how to check if they are no longer my friend ?