Here's that question

You have a lot of work ahead of you...You have to understand that to him what you did was terrible...Why did you think he woudl flirt with her anyways?..Did you not trust him?..Because if that is the case perhaps you two should not have been together anyways...It will be very difficult for him to forgive you for the deception, but it not totally hopeless...Explain the situation...Tell him how sorry he is and wait for him to coem around...Good luck...

Well, you're kind of in a bad pickle here...First, why did you want to do this little test anyway?..did you trust him?..Do you now?..If you didn't trust him before you need to find out why, then maybe you can explain yourself to him about this whole thing...With a little luck and forgiveness, he might be able to still be with you...However, you didn't just test his trust with this stunt, but showed him that you can't be trusted, because you deliberately lied to him...As a man who values honest, I can tell you that you have a monumental task ahead of you if you are going to try to get him back...Not only do you have to explain your motivations, but you have to somehow convince him that you are still trustworthy...If you can do that you might have a chance...If you can't be trustworthy yourself, how can you expect your BF to be back?..
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It's not hopeless, but I'm going to be honest, you have a lot of work to do...I suggest you go do it...

Try talking to him about why you felt the need to do this little test. Do you know why you decided to do this? What were you hoping the result to be? He may not want you back, but it can't hurt to tell him how much you care about him (so much that you go to weird lengths which of course you will never do again, right?) and ask him if there's any way you can win back his trust...

After reading what you wrote, I really don't blame you for making up a screen name...In all honesty, I have tried to mess around on my computer pretending to be a random girl contacting my now ex-bf on Myspace...He had no clue and he doesn't know to this day...I felt bad afterwards because like the loyal bf he was, he didn't flirt and he proudly stated he was in a relationship...Even though I felt bad I was extremely relieved and in a sense I'm glad I did it because otherwise I would always have wondered...It sucks that he broke up with you but in my opinion, try talking to him about it and if he doesn't seem convinced then let it go because everything happens for a reason...

He's right to be angry at you, curiousity got the better of you. You know your mistakes, talk to him and let him see how bad you feel. The next decision is his to make, whether he can forgive you or not. Imagine how you would feel if he had done the same thing to you, how long would it take you to forgive him. Give him time, if he still won't forgive you it's probably time to move on. If my boyfriend had done the same thing I would have killed him, I don't think I would have dumped him though unless I had something to hide....