My best friends brother
So, my best friend and I have known each other since we were like 7 (we're 18 now) and we are practically sisters. But I've always had a major crush on her older brother. Her brother and I were also pretty close and at one point we were flirting. I didn't want things to get awkward between any of us so I never actually started an intimate relationship with him. But I stayed over at her house for a whole week and my last night there we got drunk and I apparently ended up sleeping with her brother. She doesn't know about it and I haven't had the courage to tell her, I just don't want things to be awkward or for her to hate me. What should I do??