Play pranks on your sweetheart. Keep it light. Make fun of your crush by making him watch a stupid movie or by making fun of him for spending too much time with his instrument. Make sure the person you have a crush on understands that you are kidding. If you have a goofy nickname for the person you have a crush on, don't be afraid to use it while you're messaging them. To indicate that you are just joking around, send an emoji of a winking face.