Why was Anne so cold to her sister,Mary?I’ve heard all over that she was always mean to her sister but nice to her brother. I don’t get it.
I think it was more of a case of Anne and George having more in common than Anne and Mary. Both Anne and George seem to have had the same sense of humour and the same love of art, music and poetry. They were also both fervent reformers and enjoyed "heretical" literature and learning about the new religious thoughts that were coming out of Europe.
Mary was different. Anne may have looked down on her sister for her loose morals and for allowing herself to be the King's mistress. Anne was quite rightly furious with Mary for secretly marrying Will Stafford in 1534 as he was a commoner and she married him without her family's permission. Mary and Will were banished from court for their disobedience. Perhaps Anne felt that Mary had undermined her position as Queen by acting so rashly.
So, I think it was more of a case of the sisters not having much in common and of not being close, rather than Anne being cold towards Mary.