Not too long!

It was another five minutes before Coco walked into the classroom. "So, what did you want to talk to me about, Velvet?" she asked, before noticing the other two in the room. "...I thought you wanted to talk in private?"

"I just wanted to introduce you to a new friend I made earlier today!" Velvet replied, technically being honest, but leaving out any details that might scare Coco off before Pyrrha's spell could determine if she was a compatible candidate for Jaune's harem, and compel a kiss from her if she was. "And also his teammate."

"Oh?" Coco asked, raising her eyebrows behind her shades as she looked appraisingly at Jaune and Ren. Jaune couldn't tell if Coco was interested beyond the simple curiosity or not. Those sunglasses did wonders for one's poker face. "You must be a pretty approachable guy for Velvet to be comfortable around you already... You're Jaune Arc, right?"

"Eh? How did you know?" Jaune blinked, and Coco snorted.

"I paid attention during the entrance ceremony when teams were assigned," she replied. "You don't get to be a fashionista without a good attention to detail."

Jaune stared at her for a moment, before he chuckled. "I can't argue with that."

"Velvet already told you, but I'm Coco Adele," she nodded, extending a hand, which Jaune shook, before she turned to look at Velvet. "So why did you want this meeting to be private, if it's just you wanting me to get to know a new friend?" she asked.

"Well... I am pretty shy, remember?" Velvet replied, poking her index fingers together, and blushing.

"...I suppose, but still," Coco shrugged.