guess the cat is out of the bag..?

Both

Been there. I feel that stating your needs is often enough. Instead of explaining complicated and intimate thoughts/emotions tell the other person "I need some time for myself" or "I don't want to speak about this topic" etc. ... It strikes the balance between not making yourself vulnerable and setting boundaries.

Self check: maybe I feel this way because I became more happy with myself lately. Therefore: if it doesn't work for you, that's okay.