over discloser

a person who has no mental to verbal social filter and to whom everything personal is everybody's news

Mark: I know we work closely together and will do so for a long time to come, and I know you are in a committed relationship BUT I LOVE YOU and want to have babies with you and I love you...

Kelly: thanks for ruining our otherwise comfortable working relationship, ya freakin' over discloser, next time stfu you dumbass