I really hate this term but apparently it's the name used for such people.

Just to be clear, I'm like a "comet" and my partner is (about to get) married with his long term partner. It's a triangular type of relationship.

At the beginning it was really pleasant to talk with her - she's an experienced kinkster and I was (still am) a green bean. But the more I hang out with her while visiting my parter, the more I noticed I was always feeling extra tired and unnerved after.

I blamed my introvert nature, my social battery gets easily discharged, but I never feel that way with my partner, even when we speak about "heavy topics".

She's constantly talking about herself, usually about her work, and seems to never truly listen when you're talking about something else. Then the conversation quickly comes back to what she was saying or a new topic related to herself anyway.

And there's no way for me to avoid her when I go to their home. At some point she'd come back from work and brain fuck me with the same old stories, again and again, during the dinner