The old proverb, "Out of sight, out of mind," is true. When you surround yourself with different people and things, this person will become an object of the past.If you share the same friends and cannot avoid your crush, hang out in large groups. Cut down on the one-on-one time and stay nearer to other guy/girl friends.If you share the same extra-curricular activities, don't drop out -- that just avoids the problem. Keep yourself with friends -- or use this as a reason to make new ones!Don't go where they go! If you know parts of their schedule and where they'll be, busy yourself somewhere else. You don't want to be running into them -- accidentally or on purpose.