Booze hounds: I've had a bottle of Kahlua in the cabinet for a couple of years (already been opened). Does it go bad?

I have a bottle that's a few years old - so you got me checking - looks like 4 years and you can check it - this site seems like a practical guide - I'll be checking mine....

https://www.doesitgobad.com/does-kahlua-go-bad/