Did I do the Right Thing?

Hello Video-Gamers!

Well, I don't have a gripping story to tell you this time. I just have a small moral dillema. Kind of.
You see, as I said last time, my ex-girlfriend was trying to get us back together, and while I can't deny that I was more than just a bit tempted by the idea (she is, after all, very attractive and loving when she feels like it), I was now very much aware of all the complications and outside problems that are implicit in being in a relationship with her. So, while I wanted to say yes, I felt like I had to say no.
And, last weekend, my parents and me went to San Luis to see a live performance by my younger brother's band. And while we were at it, I thought the free time would give me a good chance to see her and talk to her and see face to face why did she want us to be together again (something that, in all our conversations up to this point i never got). And while the weekend was brimming with rewards, I didn't get to talk to her in person.
I didn't think this would be much of a setback , and I thought that the more time I got to think about it, the better. But, as always, I was wrong. This monday she texted me, and our SMS conversation quickly derivated in her asking me what did I think about her proposition. And... well, for some reason I'm a terrible liar, and even worse when it comes to lying to women. So, instead of saying something funny like some friends suggested, or saying anything to buy time, I gave her the most honest opinion I had until then. That I didn't think we were quite what the other needed at the time, that we were bound to end up hurting each other as always, that I felt my motives were all too superficial, and that I understood nothing of her motives to return. And topped it all saying that I actually cared about her and that I was very sorry to rebuff her, but that I was confident that she would find someone who would be what she needed and she still could count on me.
And after that, I couldn't stop wondering if I had done the right thing. After all, if I did right, why didn't it feel right at all? Mostly because she didn't answer after that, and I was very afraid of having actually broken her heart. I have been through that a lot, and the last thing I want is to do that same thing to someone else. I was very worried. Until she said yesterday that she more or less agreed with me, and that she, too, wished me well. That makes me feel a little better, somehow, but I still feel lik I did something horrible. Dunno. Chronic guilt syndrome, I guess.
Oh, and the girl whose phone I got? That actually ended up going nowhere. But I feel like that one, too, was my fault, so there you have it.
Have nice lives!