He is a bit of hypocrite really! During the early weeks of the series when they were all nominating, when Charlie's turn came up he told Big Brother that he did not want to nominate as he claimed he liked everybody in the house. He played this out for quite a bit, moving about on the chair as he had ants in his pants, looking behind the chair, and so on. But when Big Brother threatened him with eviction, he nominated someone immediately. I think he picked Freddie.
Big Brother called his bluff.
I think back then it was easier to evict someone right away as there were many other characters about and Charlie would have been no loss at that time. Now the characters are established and that's why Siavash gets away with not being evicted. I guess!!!
Charlie should practice what he preaches!