Wow, I didn't expect all this advice and support. Thanks everyone! ❤

LacunaCoiler,
I could totally understand where both of you are coming from.
"If she saw that you weren't will to fight to keep the relationship and it was so easy for you to throw in the towel, why would she want to give you a second change to hurt her again?" This was the idea. The break was a way, in my opinion at least, to sacrifice short-term comfort for our shared long-term goals. It was supposed to be temporary, not forever.
"suddenly realize that it was more important to have her in your life" False. We've talked about marriage like a lot and it was something we were certain would happen. So it's not really a last-ditch effort, I was planning on doing it on our three-year anniversary regardless.
I wish I could be more like you and just write it off, but when I love, I love hard. It also doesn't help that this is my first "real relationship." Thanks for your input.

HelloWorld18,
I'm sorry to hear you might have "the 'spergs" as we used to lovingly call it. Hopefully you find peace and aren't struggling too much.
"I think that if you propose to her, telling her how you feel and how you’ll never let her go again is one way of putting all the cards on the table." Yes, this is my master plan. It's not meant to be some creepy stalkerish last-ditch resort, it's meant to prove the depths of my care and commitment to make it work. And obviously that'll be my final offer, there's no way I'd try more after getting shot down with that one. I'm willing to risk the restraining order and related charges. It'd just be more of the same, since she's not talking to me or seeing me anyway.

Thanks again everyone for your input. Means a lot to me. I'll update this thread if it still exists on any further developments.