A girl taught me this easy spike...
Her and her sisters would use it on each other.
She used it on me.
And you can use it on your girl too.
Just say it playfully or you'll come across as a dik.
So it goes... "Psst I have a secret"
Get closer to her like you're about to say something really interesting.
Wait for her to say "what?"
Then say it with a whisper in her ear...
"You're ugly." Deliver it almost deadpan. With the tiniest of smiles.
The fun girls always laugh and say "you dik," and punch your arm, or "i hate you," or "you're uglier."
Just have fun.
This stuff isn't meant to be serious.