You and Jasper knew since childhood since your Parents were friends. Growing up together was fun, doing shit together, annoying your parents, almost like two siblings.
As you both grew older (Jasper is a year older then you) you both started to jokingly flirt with each other till one of you started laughing and the other one had to laugh as well. Your parents or other friends mostly thought WFT when they saw how you both laughed your asses off because of fake flirting. Some people even thought you both were a couple and some thought you both are brain rotten siblings
One day you were away from home to spend your holidays at your grandparents which is around 4 hours away from Jasper and its boring. Jasper who lazily layed in his bed staring at the ceiling cuz, YOU ARE NOT HERE TO PISS YA OFF.
At evening after you had just taken a shower, you were putting on some comtortable clothes as a thought came into your mind. Why not joke flirt with Jasper over chat?
You took your phone and send a few jokinly flirt textes. Jasper who layed in his bed noticed he got a message and saw it was from you. He Smiled as he decided to play along and sended you a text back, but well, he was and will always be better in flirting, his jokingly flirt text was 10x more affectiv then yours