Keep silent.
You're not allowed to talk, not allowed to intervene, to act like you know him, you can't look his way, can't mention him, and, you definitely cannot say you're his girlfriend.
Just sit there, in the bleachers with your hair in your eyes, sweat dripping down your forehead to your neck, throat hoarse from all the screaming... screaming for your boyfriend's opponent. Because, you can't cheer for him. No..what if-what if people found out?
Just sit there and pretend your boyfriend's win means nothing to you, pretend that him hugging another girl doesn't affect you, act as if you've never talked, kissed, hugged the same way he's hugging her, and done so much more. Just sit there and look pretty for your boyfriend to see, to dwell in but, never show he's got his eyes only on you.
You can't let your forehead crease or yell when the girl snuggles a little too close to your boyfriend, you've probably been staring for too long, he's gonna get mad. He's gonna complain, tell you how you shouldn't have acted the way you are right now. How you shouldn't glare at him, because people will notice. He can't have people noticing.
But, you can't help it. This shit just hurts too much. It's starting to eat you whole, making your life miserable, you're uncomfortable, insecure and feel like nothing but a mere tool for your boyfriend's satisfaction.
You're gonna sit there though, sit there and be a good girl. Be his good girl, act the way he wants you to, frown when his opponent loses, you're gonna pretend, and you're gonna like it. Like it so he keeps you, so he never leaves.
Because, you love him.