oversharer
Noun
Meaning
oversharer (plural oversharers)
One who overshares.
Examples
It's interesting to see how other people react to an oversharer.
Anderson has no filter and is a self-confessed “oversharer” while Bartholemew said she is a little more reticent.
I think he thought I was fun, if not a bit blunt and a bit of an oversharer.