Wow, I didn't see there was a 7th page. Whoops. Hehheh... heh....
For one, Lemony, some girls are crazy. It seems as though she either liked the "depressing" you, or she didn't notice a change in your constant moods. You're saying you were depressed out of fear of losing her, and having nobody that cares about you? That gives me the impression you have no friends. What I did, was I just retreated. Gave up, you know? I completely stopped trying to "fit in", so to speak, and went to listen to music, or do homework, or something by myself. Eventually, after about a month or so, someone dropped by to see what I was listening to, and why my music was so loud you could hear it downstairs.
I was surprised anyone dropped by to say "Hi," let alone an upper-classman. And I wasn't persistant on trying to keep my first "friend". So she dropped by more often. Then she brought a couple friends, and her friends started bringing friends, and when my fellow Freshmen saw I was hanging out with upperclassmen, they wanted to be my friend.
So, by giving up and doing my own thing, alone, with nobody around, uncaring what people thought, I got a couple friends, then my number of friends started increasing, exponentially. It didn't continue, though. It stopped at about 105 friends, and now it seems as though many girls like me, but I only like that one.
This may or may not suit you, but if you completely give up, ditching your current friends and starting over, then maybe, just maybe, you'll become extremely popular and get a girlfriend.