Should I tell one of my anxiety triggers that they are one?

One of my friends has about a high chance of triggering an anxiety episode whenever they interact with me. They are the only friend that has this high of an anxiety issue for me - probably because they're a certain personality mixed with being present during a certain time in my life - so its not their fault I have this issue.

Should I be honest and tell them that they're an anxiety trigger for me? I hesitate because 1 - they're intwined with what little social life I have, 2 - a shared friend already did a big messy "mental health break up" with them, and 3 - they have that overanalyzing personality I'm afraid they'd take it super personally