I have had the same situation. But one day i just went for it. So, i think u shud, too. Remember, the boy could be shy too.
Just tell him. Or have someone else tell him. If you get rejected then thats okay cause life is full of rejection, receiving, and other things.
If you would like me to do one of your quizzes in exchange, you can just post the link with your comment. Thanks in advance! :)