Please I need help sorry for the long post

My friend and I got really drunk and we had sex but she has a boyfriend and she told him that we just made out but way more happened and I don't regret it at all and it was great but it was all my fault and I caused her to cheat on her boyfriend that she loves and idk what to do and I feel so awful about all of this and she’s not gay and I am. I am asking for any advice please please please. I will not be able to respond because this needs to be anonymous. I am in a very bad place and just need some advice. I know what we did was wrong. Please help❤️❤️❤️