There is this one girl from college that i have lots of mutual friends but she im’s me every damn time I am on. I dont want to block her to avoid the drama, but I want to stop her ability to see that I am online and to message me.
put her in her own group. to the right of the group name in the chat window there’s a little white dot on a green slider, click it and you will go offline for that group only and wont show up on her list as online.