I agree, Siavash was the worst housemate in Big Brother history
Beasty he didn't JUST cheat on his girlfriend, this is what he did:
1. Cheated on his girlfriend
2. Lied about it
3. Ruined the fun of the show by never nominating, and causing the likes of Hira to be evicted just out of his pure ignorance, stupidity and selfish mentality.
4. Was so desperate to win that he threatened to leave the Big Brother house on the last night.
And I can go on, and on as to why he was THE worst housemate in Big Brother history.