Ask him to give it back. If he doesn’t flip it back around. You just have to own this. If you act heartbroken and embarrassed at school they won’t stop. But he’s the allegedly straight guy who dated you for three months. I’d stand up at lunch and read everyone of his letters out loud. If people start saying shit tell them “I’m gay, what’s his excuse?”

Like literally just publicly roast this jackass. Loudly ask when he’s gunna give your necklace back every time you see him. Ask if he’s keeping it because he loves you so much.

Tell everyone at school about your dates. “Hey Skyler remember when we had our first kiss at the fair. You looked adorable.”

“Hey Skyler I really liked the way you ate that corn dog.”

“It’s too bad we didn’t work out Skyler, I really liked your mom.”

“Hey did you guys like our love letters? Skyler said you’d read them to each other every night. No wonder I thought you were really gay!”

“You got me beat guys, you out-gayed me. Didn’t think that was possible! So did you hang my heart shaped necklace by your bed or do you carry it around with you cause you miss me so much.”

Refer to him publicly as your ex boyfriend. Tell everyone how amazing and romantic he was. Talk about how all his friends fantasize about hooking up with a guy because why would a “straight” guy have a boyfriend all summer.

Talk about how after each date they would all get together and gossip about your big gay relationship. Play a super romantic song on your phone at lunch and tell Skyler “Remember when we slow danced to this after our movie night. You’re a really good dancer Skyler. You must have put a lot of practice into dating me. Still have the necklace I gave you? That’s so sweet.”

He’s the idiot for pretending to be gay for three months. I mean who fucking does that. If you own it in school the public opinion will turn against them.

Once they realize their joke didn’t humiliate you like they thought, all their power will be gone. When they see you joking around and telling everyone it will be wayyy more uncomfortable for them. Literally all they have to say is “Haha isn’t it funny that you’re gay.” But you are gay. And they knew that. So what’s the point of the joke? “Let’s see how long we can convince him we’re gay too”!

Once it comes out of their mouths they will realize how stupid they sound. Privately, you know it hurts and it’s fucking horrible, but if you flip it back on them in public and make fun of them back they will deflate like little balloons and it’ll be them switching schools, not you.

EDIT: Also the key to pulling this off is to act completely nonchalant about it. If you make it sound too forced it won’t work. Like it’s funny but you’re mostly just totally bewildered. Like a casual “can you believe this fucking guy, I even let him suck my dick.”

Also watch some comedy videos. I really like Bill Burr. Nobody does righteous anger like him and his rants are fucking legendary. You’ll hate-laugh all the rage right out of you.