LISTEN to the words you wrote:
"I know I might be making a foolish mistake. I have a lot going for me where I am now, including a new job that might lead to a jumpstart in my career, a nice new apartment in my favourite neighborhood, a new program at school for which I pay practically nothing (because I live in Quebec and school is cheap here.) But all of that seems really trivial, and I'm not really happy."
Coming from the voice of experience (been where you are a few times and learned a lot of emotional/financially expensive lessons of the heart) if it didn't work the first time, what are the odds it will work out the second, third, ........
Are you thinking about her because you're lonely? In love with the thought of being in love? Bored? Miss bliss? DON'T DO IT!
If you're "in love with yourself" and feel worthy of love, then, you've got the right ingredients to finding someone else who resonates with you.
Project with power what you REALLY, REALLY, REALLY want in a mate, launch the missle of desire out to the universe, release it, and go out to parks, bookstores, coffee shops, you'll meet somehow soon.
Miserable after a confusing breakup, I missed him - we got back together, married, divorced (who knew) and he wasn't the one afterall, but there to learn lessons about myself. KNOWING I'd not meet the kind of guy I really wanted here in this city, I followed the advice from a quantum mechanic and am now with my soul mate and happy
Best of luck in what ever you choose to do!