Stiles and Lydia plan the Senior Prank together, so they might as well exchange a few kisses and a variety of balloon-related metaphors while they're at it.

Allison revisits Lydia in her dreams to provide her with some boy-advice.

"Oh my God," Scott said, amused, "he is so jealous." She shifted her attention back to the Alpha, "Hm?" "Stiles. He's glaring at me. Like really glaring at me. I think he's ready to kill me," he leaned in to whisper to her, "I can see it in his eyes."

Lydia and Kira drag Stiles and Scott to the mall for a girly, fun-filled day of shopping.

{based on the song by the 1975} sometimes, love is criminal.