how do i block someone on facebook without deleting them?

[Favorite Blue Jeansâ„¢]

well, i just feel like telling you guys why im going out with a guy and his ex is really jealous and started posting bad stuff on our walls so we deleted her as a friend but we have her friend as a brother, and she sometimes gets on as him, but hes cool too and i dont want to delete him but just block him so if she gets on as him she cant see anything. so how can i do that? please and thank you!

[njayhuang]

Hover over Settings at the top of the page and click Privacy Settings. Then go to Block List and type in his name.