I Need Help

I've seen many pretty girls in my 19 years of life and I'm very much sure I'm straight.I've dated a guy before but it lasted just 2 weeks or so since I got disinterested.I've never dated anyone after that since I considered it to be boring.
Getting to the point, there's this specific girl I very much like and it's the first time I've felt this way.I saw her some few times and now I can't stop thinking about her.I get nervous and my hands shake everytime she's near me.She stands out very much among the other girls,I always glance at her eveytime I get the chance admiring the way she walks and talks.Is it just admiration or more than that.I always find myself trying to meet each other by coincidence.
Idk I am so goddamn confused.
It also pains me that I still haven't talked to her and on top of it,I think that she's 100% She's 2 years older than me.
I have an unrequited crush of 4+ years for a boy too but I've 80% moved on from him.I just want tto know what you guys think about this.
Kill Me
【#37073810】

Guys what is it called when you can't tell any shit to your parents even tho it's not harmful at all. But I'm scared it'd be the opposite and get my head smash onto the wall (ok my mind went wild, too exaggerating I guess that will never happened but this show how scared I am) (and I oops! Ok I just remembered that's exactly how my mom threatened me. She never smash my head directly and only slap me until it bruise... Ykwhat this is why telling/confessing to other help makes you realize what is what) anyway, I want to pierce my ear, which part of the ear is the best to hide the piercing? I always had my hair down so it's not big deal. Here's a reference https://pin.it/2wGi2YhMu I can't wait aaaa ε=ε=(ノ≧∇≦)ノ