that's not enough evidence. while i would generally agree that it is true and matches my experience that the better i know people the less drained i get interacting with them, i have interacted with people i have never met before without being drained and i can get drained by people who i otherwise trust. in both cases what mattered was that i had to focus on them and not on myself. where i don't get drained with total strangers is when the topic of discussion is one where i can contribute a lot, vs a topic where i feel less secure. naturally interacting with best friends, partners and other close family, topics are often familiar and comfortable, and, uncomfortable topics are easy to avoid. at a party on the other hand it can be hit or miss, and usually hits are rare. out of several dozen events i can count two where someone i never met before and me found a topic so interesting that we were talking about it for hours. going home from those left me full of energy, when most others didn't.