<human>: Can you summarize the given text in a few sentences?

I'm currently abroad. I drunkenly got into bed last night with an attractive friend. There was no sex but we made out and canoodled. I have no excuses or explanation for it other than I was being a complete and utter drunken dumbass.

I woke up this morning with the worst feeling I've ever had in my life. I see my boyfriend of 1.5 years in just a few days. I know that I will not, cannot ever let anything like this happen again. It went against everything I stand for and I am ashamed and disgusted by my mistake. I get nauseous thinking about my actions.

Do I tell my boyfriend? It hurts so much to think of the pain I will inflict on him. I am terrified to lose him from a mistake that I will never make again.

Is it better to come out with the truth and let him decide the fate of our relationship, or is this something I should keep to myself and take to the grave? The guilt is crushing but I am clinging onto my belief that it was truly a one-time mistake and that I will NEVER EVER come even CLOSE to something like that again. 

I keep asking myself "would I want to know if I was in his shoes?" and I don't know the answer.
<bot>: I cheated. It was awful and I will never do it again. Do I tell my boyfriend or do I take this to the grave with me?