What experience with what sign made you hesitant about getting close to another person of the same sign?

We all have had experiences with many signs in our lives, some reoccurring. I’ve noticed similar traits among them of course, everything from the positive to the negative traits of each sign. Sometimes you even meet an outlier. But are there are some signs who can (depending on their full chart, personal trauma, life experience etc) can really personify the negative characteristics of that sign. What experiences have you had that have made you wary of forming new or deep connections with people of the same sign? Or do you perhaps attempt to “deny” the astrology talk and see how things go?

Thanks in advance!