I don't know you or your family personally and it sounds as if it is two exact opposite memories of a past event. Generally, from things I have seen in my own life, when that happens, it's because the original points of view were different. You were both children when the event occurred too. So, your original point of view is skewed to a child's perspective, them time wears it down too. Could be one is lying. Could also be neither are lying but the truth lies uncovered buried under the memories of you both and time and additional pain has clamped those memories closed.

If your brother was emotionally abusing you back then though, the likelihood he will repeat now is high. So if you believe he abused you, unless and until he can admit it, it's best he stays away.

I understand the desire to be close to your family. I feel the same. Sometimes though, we just have to accept we cannot control what family we were given nor the choices they make. All we can do is take responsibility for our choices and take care of ourselves.

Be good to yourself.

*hugs*