I slept with a bloke

recently, i went on holiday with a few mates, and their mate. their mate, bob, had a girlfriend, who was going to make her way down the next day because she needed to sort out childcare arrangements for her kids (from a previous relationship). now we all got drunk on the first night, as you do when youre on holiday, and bob, confided in me that after the holiday, he was going to break up with his girlfriend because she wasn't very nice and had cheated on him.
we all went back to the hotel room and played drinking games and truth or dare, until me and bob were the last two people up.
to cut a long story short, we ended up doing IT on the living room floor, afterwards, we both said we would not say a word to anyone, because it would just be awkward when his girlfriend turned up. we made it look like we'd passed out fully clothed in front of the TV. now the next day bobs girlfriend turned up and all was well, apart from the fact i felt like an utterly horrible person all weekend, as they cuddled up and even had to listen to them having rather loud sex on the last night of the holiday. i am under no illusions that im not a really disgusting person for doing it in the first place and cannot blame alcohol, because i still should have known better. but now, i just want to hear that they've broken up in a really horrible way and him to say sorry and come crawling into my arms weeping like a baby and for him to never see her again because it made me so jealous and upset. normal?