Don't let strangers log into your account ever. Because it's not just your account you're giving up. It's also the information, privacy and trust of your friends and acquaintances.
Not going to name names. But recently someone I had spoken to for a year now let a stranger log into their account.
Sure, it's for a kink, whatever. But it had my DMs, and my conversations with them in said DMs. Things involving my mental health and general location.