how do you let a guy down easily?

The only way is to completely honest. Just say, “I sure don’t want to hurt your feelings, but at the same time, I must be honest and tell you I’m just not feeling it anymore.” If he’s mature, that will be enough. He’ll respect you for telling him the truth upfront and for not leading him on.

Can you make him understand that feelings come and go? You just gotta enjoy the good times when they're here.
If not, just be honest. It may hurt, but its real.

There's no easy, just tell it how it is.

Just be honest. How would you want it to be if it we're done to you?

Don't toy with his feelings. Just tell him the truth

Sneak up behind him and slit his throat first..

Tell him the truth!

Honestly.

Be gracious and honest. Takes a lot of balls to ask a girl out.

Rejection is never easy. I would just be honest with him about how you feel.

Tell him that you've decided to choose abstinence....mainly from him

Text message: "Welcome to Dumpsville! Population: you."

No matter what you say or what you do, he’s gonna be devastated. So you may want let his friends know what’s going on in case he wants to hurt himself.

As someone stated before, you just have to lay it down as it is.

Tell him he’s weak and he smells funny

How would you want to be let down?

Just be straight up with him

Flirt with his sister