Is it wrong to still feel a certain way after someone apologized?

So my brother talked to my fiance and said some hurtful things about me and told him he wouldn't blame him if he left. I told my brother how I felt and that he shouldn't be in my relationship. He apologized but I still feel weird. I felt my brother and I's relationship was pretty good, when I was a kid he'd be mean to me. I guess I just wouldn't expect him to do that behind my back. I guess I just need time to get over it even though it hurt.
Is it wrong to still feel a certain way after someone apologized?
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