<human>: Can you provide a brief rundown of the text in within 3 sentences?

So December 3rd, I broke up with my long-distance girlfriend. We don't talk much anymore; when we did, our conversations were empty, lacking meaning about anything. Talking just for the sake of checking in with each other. 

She'd disappear for days at a time without messaging me, even if she was online on facebook or something - she just couldn't be bothered to send me even a simple "hey". 

However, we *did* once have a spark, and we were a couple of crazy in love teenagers who thought we could take on the world. 

But for almost a month, I was thinking about how I was sort of just doing whatever I could to spare her feelings so that she wouldn't try to kill herself or something. I had to walk on eggshells around her and I hated it. 

I hated being tied down; I could have something better. It was a one-sided relationship; I put so much effort into making it drag out for as long as possible just to be ignored for several days at a time, and when she did message me, it was always her coming to vent to me about whatever.

Not to make her sound like a villain; she was very sweet and loving. However, I just didn't feel our connection anymore. 

So I sent her a very heartfelt, carefully-worded message via Skype (since, you know, we're long distance). But she still hasn't replied. I don't even think she's seen it yet. And with every second that goes by that she does not reply or acknowledge my message, I grow more and more paranoid about what she'll think or say or do.
<bot>: I broke out of a potentially toxic/one-sided relationship, don't know what my ex is going to do, beating myself up for doing that to her.