"You shouldn't like me!"
"Pardon?"
"I lose my hair ties all the time, I absolutely despise vegetables, I steal library books, I always fight with my parents, I'm total complete crap at Divination, I am the biggest non-morning person you will ever meet, I watch way to much TV, I chew on my pencil when I'm nervous or don't know the answer to a question- and oh! One time I cheated-"
"Wow, you have a very large lung capacity. Okay, I steal most of your hair ties hoping you'll get the hint and wear your hair down, and who likes vegetables anyway? Seriously? Same goes for the parent thing. And the library books thing is you, so needless to say it's adorable. I'm profoundly glad that you aren't good at Divination because that would suggest that you are quite bonkers. What's TV? And I find it hard to believe that you wouldn't know the answer to something-and did you forget that I'm a Marauder? Up until recently I've cheated on most everything."
"…whatever. You still shouldn't like me."
"And why exactly not?"
"Because I lose my hair ties and-"
"I can already tell this is going to be an extremely cheesy/corny line, but at the moment it's all I can think of so you're just going to have to deal with it. Can I kiss you?"
"But that would totally go against everything I just-well? Are you going to kiss me or not?"