It isn't my fault you have poor taste in girlfriends.
It isn't like she got here and suddenly became goodness and light. She dug her own grave, Elijah. She compelled an innocent woman into betraying someone she cared about, resulting in his death. She all but signed the deal that would turn Hal Yorke into Harry Yorke--which, might I remind you, was part of her 'redemption' days. Or did you forget the part where your girlfriend had another man's face between her legs? And then, when she had a chance at redemption by being human again, she went crying to you and you went right ahead and turned her back.
I have every right, in fact, it is my responsibility to regulate who Bo speaks with. I don't want her associating with the foul woman and I won't allow it.