how do i clear my facebook chat history?

[shawn]

I said some stuff that i shouldn't have on facebook chat like three years ago, and my friend is telling people, so how do i delete the facebook chat for both of us. will it work if i block him and then re friend him?

[Mary]

the conversation would have to be deleted from his account. that's about the only way.

[SpaceInfidelity]

Unless he deletes the things you sent him, there's no way of deleting them. Or unless you know his password, then you can get into his account and delete them.