I think it depends on how the disclosure comes up; if it is relevant to what is being discussed, your issues, it can be helpful or forgotten, whichever you decide. I've had T disclose odd little details, of no consequence but they were disclosed when we were talking about a similar odd little detail of no consequence of mine (so, she in essence identified with me or gave me a way, allowed me, to identify with her). Some disclosures have been pleasant, others helpful in understanding why she did/did not do/say something that bothered me.