First, let's see what kind of boy he is. If he is lively and cheerful, you can tell him directly and speak softly so that we can get together and part. I believe he will respect your wishes and ideas.

Secondly, if you are an introverted and unacceptable man, I suggest you choose the right time and place to show him your mind, but be careful not to let him overreact.

Thirdly, if he is stubborn or unwilling, I suggest you break up directly by phone in the simplest and clearest way.

Supplement: I don't think it's necessary to say anything when we have dinner together and revisit the usual dating place together when we break up. That makes my heart worse. Of course, I hope the man around you is the first ~ and then I think he will smile and bless you, although his heart is very uncomfortable. At least he can put it down.

This is purely personal advice. How to deal with it is up to you.