Why love makes us uncontrollable even if we try to do the opposite to what heart tells? Maybe because we do often listen to our heart and forget aboout other things like common sense and things our precious life is so full of.
The first "medicine" of this mind and heart crush will be trying to get involved in something that puts you in a good mood and fills your mind with new flow of ideas and life! Try to throw a big hen-party and order some pizza that will obscure all your thoughts and longings for being with him.
Also you may engage yourself in some sort of activities and this way you'll kill two birds at once - make money and get distracted.
But don't be of any nuisance to him....this will only strengthen I-want-out effect!