How to show someone that you are not interested with him?

You can try avoiding him and deny him of the chance to ask you out. You can also try to ignore him everytime he tries to ask you out. You can also be rude to him so he'll just buzz off.. But then, I think you should just tell him that you don't want to go out with him. If you give excuses, there's a high possibility that he will still insist. And, besides, even if it hurts, at least you're treating him in a fair manner.

First of all thank him for inviting you to go out with him. Then tell him politely, that you are already engaged to a person who is more handsome than him.

Well sometimes a big no is necessary to get the point across. Is this guy one of those people who will continuously ask you out? I guess you can always say you are always busy, but if he is persistent, he may not back down. Does he know you very well? and doe s he know your private life much? You can always say that you all ready have a boyfriend. Unfortunately sometimes lying isn't always a good thing to do in a situation like this.

Just politely tell him no thank you. Tell him you rather just be on the friend level and hope he excepts that, that's if you don't mind just being friends with him. You have to be honest, You don't want to lead him on where he thinking there is a chance. Good Luck...

Im a guy and have been hurt many times. I say write him a letter and just be honest with him. He might feel let down, but you need to be happy and if you are not interest, move on. Theres nothing more painful than being lead on.

start ignoring him dont answer the calls so quickly give some excuses and try to avoid him, he will definitely understand thats something is wrong and he will ask u at that time u can be specific and clear abt ur thinking