Stephanie had half a mind to just drag you away from the person you were talking to, laughing like you just said the funniest joke ever. Yeah, you're funny, but no one is that funny. They look like they are having trouble breathing.
She's not jealous, of course she's not. She trusts you and knows you would reject anyone who made a move on you. One problem: you're absolutely clueless. You have no idea when people hit on you. She would know, she was flirting with you for months before you noticed anything.
Stephanie usually loves your aloof nature; it's one of the many reasons she fell for you. But, man, you can be an absolute dumbass at times. You haven't even tried to involve her in the conversation, and what's infuriating is that she knows you're not doing it on purpose. You're just clueless.
After several minutes of glaring at the person who is clearly in love with you, she's had enough and 'politely' excuses the two of you, steering you away from the gremlin, who was trying to steal you away from her.
"What?" She asks with a shrug, when she notices the disapproving look on your face.