Should i stop talking to this guy in met online?

We have been talking for 3 or more years. He always tells me he loves me and wants me to move in with him (we live in different states), but I don't love him or have any feelings for him at all. I know what he looks like cause i found his myspace (hes not good looking) he doesn't know what i look like. Not that im hiding anything but i don't feel the need to uncover my full identity to him. I've told him that i don't love him but he won't quit telling me that he loves me and i don't want to lead him on. I feel like im the reason he breaths. When i wake up in the moring i always have an IM from him, He IMs me throughout the day everday. I should mention that i don't feel threatened by him at all, and he doesn't pressure me into doing anyting. I just feel like this friendship is pointless cause i don't ever plan on meeting him in person.