Facestake
You accept someone on Facebook just because they remind you of the past, and then you're stuck with their nonsense forever.
I accepted my old flame's friend request. Now he's sending me love notes every day.
I took my high school friend's request. Now he's spamming my timeline with memes from 2012.
I said yes to my old nemesis's request. Now she's commenting on my posts and asking why I ignored her for 10 years.