My best friend told me he loved me, but I have a boyfriend and I don't feel the same way. How do I tell him?

I think you need to sit him down and just tell him. You need to be honest and straight to the point, don't "beat around the bush" as that's not going to do anything good. And do it soon.
+5

u should talk to him and clarify very intelligently without hurting him (we will remain good friend but i don't feel love same for u like that). dear always remember one thing friends are precious so we must save our friendship. if it would not work then try to explain him about platonic friendship. it might be work......all the best

In your other question you said you loved another girl. Yet you have a boyfriend? You should go on Oprah while you still can. Bring your best friend with you.

You just politely explain to him that you have a boyfriend and if he wants to continue being your friend he needs to respect your relationship. If he still persists, you should inform your boyfriend and have him tell your friend.

You are the first woman not to know that I know of. Men and women are at best dangerous friends because of just this. Get some girlfriends, dump this friend or become an acquaintance which is the most you need to be with men, and have done with it.

tell him straight up it sucks when girls play games he'll still be your friend if you don't play games

You did a good job phrasing it in a question.......use it.

Just like that.."I have a boyfriend and dont feel the same way. Sorry"... If he's your best friend he'll understand.

Tell him you have a boy friend. You just never thought of him in that way.