Why do they like fb posts

[Shockedmama]

That your in even after they been in a hole been nasty to you
And you’ve blocked them?

I'm assuming someone you don't like has liked a photo that you're in?

If you've blocked them - how do you know they've liked it?

They're obviously still friends with someone on Facebook that's been tagged in it so I would assume they've liked it because they like someone in the photo

How do you know they've liked it if you've blocked them?

They won't see you're tagged if they're blocked. You also won't see they've liked it....