Crushing love

Do you reach a point in your life where you don't have harmless little crushes anymore? I think that it is possible never to lose to carefree attitude toward liking people. There is such a huge line between 'crushing' on someone and 'loving' someone and I think that once one has been in a serious relationship, it is suddenly decided that you can't just simply have a crush on someone [à la grade 3], and that you must make things happen with that person, and then fall in love. Then of course, you are disappointed when it doesn't turn out perfectly, because you really didn't have deep enough feelings for the person to actually have a relationship. So I've arbitrarily decided--as it was decided that you can't have a little crush without wanting to date the person--that we may now go back to the land of giggles and sleepover parties where you gush about a guy's [or girl's] perfection, and dream about kissing them, but don't do anything about it.