Did i technically cheat on my girlfriend by seeing another girl flash me?

I was on chatroulette with a total stranger, and being the horny and curious self I am, I asked her to flash me. She actually did, and two seconds later, knowing how much I love my girlfriend and how wrong this was, I quit the chat. I was so disgusted with myself, and didn't know why I did such a thing considering I love my girlfriend and never would think to cheat on her. This whole day I have been feeling so guilty as I just try to get over that I made a stupid mistake, and I will never do it again. As much as I trust and love my girlfriend, I don't feel like telling her would be the best thing because she might not understand this as I don't know her views on Internet porn and such. I need advice on this as well as since I know this will never happen again, I should not forget about this, but learn from it and learn from my mistake and be the best boyfriend possible. Tell me what you think.