Unrequited?
Lily slid into her seat, trying not to disturb the class.
"You're late, Evans," James tutted from the desk behind hers.
She turned around with a glare, "So?"
He pointed his quill at her mockingly, "Detention!"
Lily huffed, turning back around in her seat and beginning to listen to Binns, despite being one of the only students doing so.
A few minutes later, Sirius leaned over to tap Lily on the shoulder.
She whirled back around, anger evident on her face, "Can you leave me alone, Potter! Why are you so infuriating?"
James frowned, glancing up from his doodle on a sleeping Peter's arm, "What did I do?"
Sirius rested his head on James' shoulder, "That was me, Evans. You got James on the mind, huh?"
"I don't! He's just directly behind me so I made a guess!" She glared at him, "Now will you both leave me alone?"
James pouted, "But I think about you all the time!"
Peter lifted his head up, eyes still closed, to chime in with "In the shower."
Sirius erupted in laughter as James freezed up.
"That's disgusting!" Lily grimaced.
James leaned over the desk to try to defend himself, "Wait I don't, that's not true I swear- I think about giving you flowers and you visiting my parents!"
The rest of the class turned to him as Binns droned on.
Lily stared at him in shock as James glanced around the room, scrambling away from Lily and ending up falling off his chair.
Sirius grabbed his arm, pulling him up as the class began to laugh.
Lily smiled at him slightly before realising she had done so, and immediately turning back around, but not before Sirius had seen her reaction, and focusing on her notes as her face, neck, and ears began to match her hair.
"She thinks I'm a creep now" James sighed, beginning to draw a penis on Peter's arm, abandoning the previously drawn seashells.
Sirius leaned back down on the desk, going back to the crossword he had been doing.
"Nah, she doesn't", Sirius muttered.