Am I wrong to still have a "grudge"

My brother and I have a 2 year age difference, I am the older sister. When I was around 15 and he was 12-13 I wanted to get drunk and my brother knew where the alcohol was. Long story short my brother kept on handing me drinks until I got extremely drunk and tried to touch me, exposed himself, and made me touch him but I ended up kicking him. My parents ended up catching me and I told them what happened and that basically just told him not to do that again and he apologized but I have never been able to put it out of my mind. It's been close to 5 years since this incident and i can't show any affection towards him like when he's upset I just can't hug him... But I am his big sister so I feel like I should be there for him emotionally but I just can't be. Is this somethig I can get past?