Green Envy Monster

I've had a crush on one of my best guy friends forever. We have really good chemistry and I thought he might have simalar sentiments. Okay well as high school as this sounds he recently asked a girl I can't stand to the prom. I pretended to be really happy for him, since he's not exactly a womanizer and he's really excited but inside I was crushed. How do I cope with his questions about corsages and tuxes while simultaneously getting over him? I also really want to grow to like his date and the good best friend, not the guilt tripping one, but its hard when Im so jealous of their relationship I could puke, and when I've never been much of a fan of her in the first place. I know its all very high school drama, and it seems unimportant in the context of all these real life secrets, but any support would be greatly appreciated.
Category General Confession