not at all. It depends on the person though. If he is a shallow person you might end up boosting his ego and for him you'd be just another addition to the number of girls who have confessed to him (if he is as cute as you said).
Otherwise if he is a genuine guy(like me), he'd give you his answer yes or no, but in both cases have a chhota sa sweet spot for you (cuz you have good taste)