How to make my boyfriend forgive me?

Hey there - thanks for reading this :) My problem is of the cheating nature. I've been with my boyfriend for a year and a half now. However, we had known each other for a very long time before so we got to a pretty committed place pretty fast. About a year ago I moved to a different country to go to university, but he stayed behind. We've managed to spend quite some time together in the past year, he stayed with me for months and I came home for a very long christmas holiday and was with him for the entire summer. Last year I made a terrible mistake. I was stupid and horny and my boyfriend is opposed to cyber sex activities. I went online and I found some guy and we had a sexual conversation. There was a webcam and I took off my clothes and I suppose you can guess the rest. Not sure if it matters but I didn´t ... come or anything like that. I quit before anything like that happened. At the time I didn´t realize the seriousness of my actions. I know I shouldn´t be making excuses, but bear with me, please. I didn´t feel like what I was doing was real. It just felt like watching porn. It wasn´t until a while later that I realized that I had been talking to a real person, and I took off my clothes, and I cheated on the love of my life. Who has been so patient and ready to wait three years for my while I finish my studies. It's been tearing me apart. All I want is for there to be a way for me to take it back. Earlier today I admitted this to my boyfriend. He said he needed time to process this. Now I'm just.... I don´t know - I guess I'm looking for a way to make this easier for him. Is there anything I can do to help him? I want him to forgive me, but above all, I want to somehow make him feel better. I can´t imagine what this must be like for him. So please, if anyone out there has experienced anything similar, could you give me advice? What can I do to make this easier for him? I know, I know, I should never have done this. But I did and now I need to find a way to make it at least a little better.

Hi...i've never cheated before but the only thing i can suggest is to keep reassuring him over and over....ok so you made a mistake of doing the webcam thing but you didn't physically cheat you wasn't intimate physically with the person online...it's still not good and still is sort of cheating but you just need to keep telling him and PROMISE you'll never ever do it again.