My heart breaks for you. It really does. But you have to understand, what you did was wrong. I understand you're going through a lot, but you must grasp the fact that some of it is your fault and you, only YOU can set things right. Lying and asking me to lie to cover up your own- isn't the way to go about it. *sigh* You still have a lot of growing up to do. Sometimes I think I'm the only sensible one around here.
You simply CAN'T base a relationship on a lie. You need to base it on truth and trust. Without that, things will go nowhere. And besides, one lie always leads to another. And where the heck do you get off asking me to cover up for you, and say that it was my lie? I'm not concerned about the fact that I'll be made to come off as the person in the wrong, but how does it even cross your mind to ask this?
You've made mistakes, and you need to suffer the consequences. I may be your friend, but I wouldn't be a very good friend if I shielded you from something you need, would I? You need to understand your mistake, and I'm not going to lie for you, however many times you plead me to. Otherwise you'd just end up making the same mistake again.
And if you weren't ready for the relationship, why did you get into it in the first place? If you weren't ready for the big steps that you took, why did you let things go so far? One simply has to be a little mature about these things. It's not a ball you're playing with, it's your life. Every decision counts. Every decision we make leads to the person we become.
At the end of the day, it's just a break-up. That's all. It's not the end of the world. There's simply no need to make such a hue and cry and act like Armageddon's come.
You're probably feeling angry and disappointed that I didn't stand up for you, and didn't support you. Believe me, I am supporting you, but in the way that you need, not the way that you want. Someday you'll understand, hopefully.