Crushes, crushes everywhere.

Almost 4 years ago, I had a crush on this amazing Girl form my school. She was bubbly, cute , and extremely pretty. Today, I realised an empty void in my heart where she used to be. In retrospect, all my feelings were based on lust alone. I know, I know, there are people who say that "If you have a crush on a girl for more than 3 months, it's not a crush but love." Honestly, I think it's all crap. It's almost impossible to know what love actually is, it's not definable as it so broad. Anyways, back to the girl. She's a good friend of sister's , and yeah my sister know that I used to have a crush on her. Used to. Now she;s just a distant memory, and we're nothing more than mere strangers. It's a funny thing, crushes, one minute you are absolutely crazy about them, the next, they're just dust on your back. Just a commodity, nothing special. I'm afraid that's how she is to me now.

Then there's another crush recently, I will reveal not her name and only a select few know who she is. Thing is, I don't have a crush on her anymore. Funny huh? It was only a mere three months ago when I used to be head over heels for her. I guess it all went tumbling down when I found out that she had a boyfriend. (SHE HAS A BOYFRIEND?!?!). Just like The 1975 said in their song, Sex, "She's got a boyfriend anyway". I did try to respect her relationship. She did call me interesting once and I had a feeling that she liked me, before I found out that she had a boyfriend that is. I guess I became too annoying (like I always do).
Another crush I have now is of a girl who's younger than me. She reminds of my primary school crush (Is that even safe?). I'm playing it safe now, just playing the distance game and sneaky glances (Or the odd stare). I'm pretty sure she notices me, we have locked eyes before but that was all. I don't exactly want to take the next step of talking to her, it's not that i'm not confident. I just don't think I should.