I think it's definitely possible to speak about therapeutic topics to others! I've opened up to my husband about some and to a lesser extent in-laws and close friends, I also was involved in volunteer hotline work (youth/crisis hotline) and many of these types of serious issues, both our own personal histories and related issues were part of the conversations my friends and colleagues had. I also previously discussed painful things in support groups, which was good practice, probably, in transitioning to serious discussions outside therapy.

I find it very healing to discuss the hard things in real life- it makes my life more authentic. Of course, it's important to do it properly, I don't dump serious issues on acquaintances, or just disclose anything anytime with family. But done right, it's a good thing!

P.S. My therapist has told me she does think of me between sessions, I am positive she's not the only one who cares about clients outside the paid hour!