Stiles and Lena
"Is that what you're supposed to do with them?" Lena wondered. That sounded like a lot of fun and like Jeff would love it. She could see him now, soaking wet like she was and spinning and dancing around in the way that he did. He'd be having an amazing time and it made Lena a little sad to know that she wasn't going to see him again. That even if she went home like they said she might one day, she was going back to 1905 and would never see her friends again.
"I've never actually seen these sorts of things before."
There weren't a lot of balloons at all in her life, much less ones filled with water.