How to reject a person's confession

To reject a person's confession, one could refer to the following classic saying: Thank you for your good impression of me, but I have to tell you that my feelings for you are only between friends. I cherish our friendship, but I don't want to give you hope, so I can't accept your confession. But I cannot deceive or hide my feelings. I hope you can understand that my confession doesn't mean that I don't love you. I just can't accept a relationship. I need time to think about it. I need to understand your friendship with us better. But I already have a boyfriend and I don't want to hurt his feelings. Thank you for your courage and honesty, but I must confess my feelings. To reject a person's confession, you need to be firm and polite. Don't hurt the other party's feelings, and at the same time, let the other party know your true thoughts and feelings.